Ppt on data collection methods

Applied Quantitative Methods MBA course Montenegro Peter Balogh PhD

caravan, or rides a motorbike or buys for someone else should be included. 3. Survey methods Having identified those of interest we still need to ensure that the data collected is: appropriate adequate without bias. Decisions need to be made on method of selection, method of contact and method of data collection. The validity of your work will depend on the methodology. Objectives 3.1 Probability sampling The/


Data Mining Methods and Models, By Daniel T. Larose. Copyright 2006 John Wiley & Sons, Inc. Data Mining Methods and Models Daniel T. Larose, Ph.D. Chapter.

Data Mining: CRISP – DM (cont’d) –Data Understanding Phase Collect the data Collect the data Employ exploratory data analysis (EDA) to become familiar with the data and discover initial insights Employ exploratory data analysis (EDA) to become familiar with the data and discover initial insights Evaluate data quality Evaluate data/of –$3.16 per customer Second continuous method for combining models: mean response probabilities (MRP) Second continuous method for combining models: mean response probabilities (/


Taken Partially from the net

evidences to reach decisions or the right solutions, using defined standards, and appropriate and substantive methods for the evaluation of the collected data. 4- Scientific research relies on the use of experimental tools , modern techniques and statistics/evidences to reach decisions or the right solutions, using defined standards, and appropriate and substantive methods for the evaluation of the collected data. 4- Scientific research relies on the use of experimental tools , modern techniques and /


Data Collection Methods Mrunalini JS. 2 ‘It is a capital mistake to theorize before one has data.’ -Sir Arthur Conan Doyle as Sherlock Holmes.

to fund primary collection, then it is the method of choice. But if it does not, and the researcher is able to fund primary collection, then it is the method of choice. Combining Data Collection Methods Methods and instruments are often combined with one another. Methods and instruments are often combined with one another. Triangulation Using a number of data collection methods is often called triangulation. Using a number of data collection methods is often/


Unit 5: Collecting data Unit 5: Collecting data

do these words mean relative to your evaluation information? How can you help ensure that your evaluation data are trustworthy and credible? Building Capacity in Evaluating Outcomes © 2008 University of Wisconsin-Extension, Cooperative Extension, Program Development and Evaluation Common data collection methods Unit 5: Collecting data Common data collection methods Survey Case study Interview Observation Group assessment Expert or peer reviews Portfolio reviews Testimonials Tests Photographs, videotapes/


The Interview as a Tool in Research

made. This connection is made through the methods of data collection. While deciding about the method of data collection to be used for the study, researcher should keep in mind two types of data viz., Primary data and Secondary dataData Collection Method   Primary Data Secondary Data ----­-------------------------------­­­­­­­­­-----------------------------------------------------------  Questionnaire Interview Observation The primary data are those which are collected afresh and for the first time, and/


Content Page Observational Method Experimental Method

that observation will be conducted. Place observers in position. Conduct observation – pts are observed for designated period while observers record behaviours (data collected). Thank and debriefed pts (overt) Analyse data, produce findings and draw conclusions Write report of practical investigation. Qualitative Methods Observations Self Report Correlation Correlational Analysis Nature & Use Co-variables examined for positive, negative or zero association. Advantages Allows study of hypotheses/


IS 4800 Empirical Research Methods for Information Science Class Notes March 21 and 23 Instructor: Prof. Carole Hafner, 446 WVH Tel:

work and explaining how the most relevant prior work is related to the current study. Be honest about problems encountered, researcher’s role, conflicting data. Present complex material verbally and graphically. Follow good technical writing style. Qualitative Research Data collection methods I. Observation 6 months – 1 year II. Interviews Informal III. Analysis of artifacts (documents, arts and crafts, tools) 13 I. Observation: Developing Behavioral/


 2002 Prentice Hall. All rights reserved. 1 Chapter 17 – Files and Streams Outline 17.1 Introduction 17.2 Data Hierarchy 17.3 Files and Streams 17.4 Classes.

( binaryOutput == null ) 102 binaryOutput.Close(); 103 104 } // end method SaveFile 105 } // end class CreateRandomAccessFile  2002 Prentice Hall. All rights reserved. Outline 62 WriteRandomAcces sFile.cs 1 // Fig 17.16: WriteRandomAccessFile.cs 2 // Write data to a random-access file. 3 4 // C# namespaces 5 using System; 6 using System.Drawing; 7 using System.Collections; 8 using System.ComponentModel; 9 using System.Windows.Forms/


Client and Service Information (CSI) Database

) / Race (C-10.0) Background Summary of Changes Data Collection & Management Q&A Data Collection Overview Collecting Ethnicity BEFORE Race has been found to improve response accuracy “Yes” to Hispanic/Latino more likely Response should be obtained for BOTH questions New collection method for: New clients (after 7/1/06) Existing client record updates Data Management No need to convert existing data Collection method may vary widely (written, interview, etc.), but/


Applied Quantitative Methods MBA course Montenegro

generation (brainstorming) Solution finding Acceptance and implementation what we have and what we want!!! 1.2 Methodology Old methods New methods Reliability and validity of findings (conclusions) Was the purpose of the research clear? Was this research necessary? (desk research) Was the means of data collection appropriate? What can we infer? (-inductive approach generalization -deductive approach) 1.3 Models 1.3.1 Model abstraction/


Collecting and Managing Data 2005 Show-Me The Measures Summit Jefferson City, Missouri July 13, 2005 Bill Elder University of Missouri-Columbia Office.

is often expensive, it is wise to be “connected.” Good performance frameworks include planning guides to help accomplish this essential task (see links). Dimensions of Data Collection Types of Data Data Collection Issues Data Collection Strategies Data Collection Methods Types of Data Quantitative (counts, rates, means, closed-ended questions) –“hard” –Requires adequate statistical treatment –Require clear context for interpretation Qualitative (focus groups, case studies, open-ended questions) –“soft/


James Tam CPSC 233: Introduction to Classes And Objects, Part II More on Java methods Relations between classes Association Aggregation Multiplicity Issues.

"; } public Sheep (String newName) { flockSize++; System.out.println("Creating the sheep called " + newName); name = newName; } James Tam Static Data And Methods: The Sheep Class (2) public static int getFlockSize () { return flockSize; } public String getName () { return name; } public void changeName (/ in the Java garbage collection process: the finalize method and how it fits into the garbage collection of references What is the difference between static and instance methods, and static and instance/


Lists and the Collections Framework

.) Comparison of Iterator and ListIterator ListIterator is a subinterface of Iterator Classes that implement ListIterator must provide the features of both Iterator: Requires fewer methods Can iterate over more general data structures Iterator is required by the Collection interface ListIterator is required only by the List interface Conversion Between ListIterator and an Index nextIndex()returns the index of item to be returned by/


 2002 Prentice Hall. All rights reserved. 1 Chapter 23 – Data Structures Outline 23.1 Introduction 23.2 Self-Referential Classes 23.3 Linked Lists 23.4.

: –Prepackaged data structures Store collections of data –Programmer uses already existing data structures.NET provides several collections –We’ll look at: Array / Array-List / Stack / Hashtable –In addition, namespace System.Collections provides: BitArray / Queue / SortedList Collections are standardized for easy sharing and optimized for efficient execution and memory use  2002 Prentice Hall. All rights reserved. 66 23.7.1 Collection Class Array Properties: –Length: returns length of array Methods/


 2006 Pearson Education, Inc. All rights reserved. 1 27 Collections.

1 Introduction.NET Framework Collections -Prepackaged data-structure classes Known as collection classes Store collections of data -Collection classes Enable programmers to store sets of items by using existing data structures -Need not /collection Method Reset -Positions the enumerator before the first element of the collection Method Current -Returns the object at the current location in the collection Note on methods MoveNext and Reset -Throws an InvalidOperationException If the contents of the collection/


Building Java Programs Chapter 16 Linked Lists. 2 A swap method? Does the following swap method work? Why or why not? public static void main(String[]

.println(current.data); current = current.next; } Similar to array code: int[] a =...; int i = 0; while (i < a.length) { System.out.println(a[i]); i++; } 29 A LinkedIntList class Lets write a collection class named LinkedIntList. –Has the same methods as ArrayIntList / datanext 42 datanext -3 datanext 17 current element:-3 current index: 1 iterator 93 Iterator methods –every provided collection has an iterator method Set set = new HashSet ();... Iterator itr = set.iterator();... Exercise: Write iterators for/


交通大學資訊工程學系 Programming in Java Java Collections Framework (JCF) java.util.* -- Vector, Stack, HashTable…, String and String Parser 蔡文能 交通大學資訊工程學系

— is simply an object that groups multiple elements into a single unit. Collections are used to store, retrieve, manipulate, and communicate aggregate data. 交通大學資訊工程學系 蔡文能 6- 第 4 頁 JavaMore Java Examples Package java.util (2/3) A collections framework is a unified architecture for representing and manipulating collections. All collections frameworks contain:  Interfaces  Implementations  Algorithms --- polymorphic methods: the same method can be used on many different implementations of the appropriate/


Planning a Mixed Methods Study

its definition Challenges in using this design Examples of using the type of design (in your field, if possible) Reference and inclusion of a visual diagram Quantitative data collection and analysis Qualitative data collection and analysis Mixed methods data analysis procedures Validity approaches in both quantitative and qualitative research Researcher’s Resources and Skills Potential Ethical Issues Timeline for Completing the Study References/Appendices with instruments/


1 PATTERNS FOR AUTOMATIC INTEGRATION OF THE DOMAIN-DATA LAYERS IN ENTERPRISE-SYSTEMS Mira Balaban Joint work with Lior Limonad Ben Gurion University Beer-Sheva,

to quantify!  Measurable observables: Object structure preservation Preservation of references between objects Preservation of objects availability Method preservation Transparent integration No domain-layer changes IBM Haifa, Oct 0678 DAL-Insertion algorithm – characterizations : Requires only local information – no data flow analysis: The system Marked persistent classes Marked persistent collections Non deterministic Minimal – based on a minimal set of constraints for DAL pattern combination Correct/


1 Second Edition Dr. Wasim Al-Habil. Chapter 5...................... Chapter 5...................... Research Methods for Business Students Research Methods.

process, to help you to deal with these. Able to evaluate the ethical issues associated with particular data collection methods. 4 Previously … we looked at turning Research ideas into Research Projects Move from a Research idea /several iterations (repetition)… Written critical review of the literature….. Feedback loop 6 Differing approaches to research Data collection methods Research strategies Time horizons Research approaches Research philosophy 7 Wish to research Formulate and clarify your Research /


Chapter 17 Mixed Method Designs

Research by John W. Creswell. Copyright ©2002 by Pearson Education. All rights reserved. Mixed Method Designs: Exploratory Design Research emphasizes qualitative (QUAL) data rather than quantitative (quan) data Researcher has a sequence to data collection that involves collecting quantitative data followed by qualitative data Researcher plans on the quantitative data to build on or explain the initial qualitative findings Educational Research by John W. Creswell. Copyright ©2002 by Pearson/


交通大學資訊工程學系 Programming in Java Java Collections Framework (JCF) java.util.* -- Vector, Stack, HashTable…, String and String Parser 蔡文能 交通大學資訊工程學系

simply an object that groups multiple elements into a single unit. Collections are used to store, retrieve, manipulate, and communicate aggregate data. 交通大學資訊工程學系 蔡文能 6- 第 4 頁 JavaJava Collection Framework Package java.util (2/3) A collections framework is a unified architecture for representing and manipulating collections. All collections frameworks contain:  Interfaces  Implementations  Algorithms --- polymorphic methods: the same method can be used on many different implementations of the appropriate/


 2006 Pearson Education, Inc. All rights reserved. 1 28 Collections Many slides modified by Prof. L. Lilien (even many without an explicit message indicating.

implementations of many of the data structures discussed in class (Ch.26) -Non-generic collections that store references of type object  2006 Pearson Education, Inc. All rights reserved. 24 28.4 Non-generic Collections (Cont.) 28.4.1 Class ArrayList Class ArrayList -Mimics the functionality of conventional arrays -Provides dynamic resizing of the collection through the class’s methods Property Capacity -Manipulate the capacity of/


Qualitative Data Analysis and Interpretation

of resources, time, and expertise? Does the study include both quantitative and qualitative research questions? Does the study clearly identify qualitative and quantitative data collection techniques? Does the study use appropriate data analysis techniques for the type of mixed methods design? Final Exam Due next Monday the 11th via email by 7:30. If you struggle with email attachments give yourself extra time. I/


Introduction to Qualitative Research

or unit (could be multiple individuals) Procedure Determine the case (individual, group, or environment) to study Determine data collection strategies & data to be collected Collect the data Analyze the data Qualitative Research Methods: Case Study Potential Problems Observer (researcher) bias Lack of generalizability Requires extensive data collection Qualitative Research Methods: Observational Purpose to determine current status of a given phenomenon; to derive specific, test-able hypotheses that explain/


James Tam CPSC 233: Advanced Java And Object-Oriented Concepts More on Java methods Relations between classes Association Aggregation Multiplicity Issues.

newName) { flockSize++; System.out.println("Creating the sheep called " + newName); name = newName; } James Tam Static Data And Methods: The Sheep Class (2) public static int getFlockSize () { return flockSize; } public String getName () { return name;/ complete example can be found in the directory /home/233/examples/advancedOO/fifthExample +MAXSIZE: int -currentSize; int -collection: Book [] +createCollection () +addBook () +displayCollection() // Numerous accessors // & mutators BookCollection +MIN: int /


1 CSC 427: Data Structures and Algorithm Analysis Fall 2006 Java Collections & List implementations  Collection classes: ─List (ArrayList, LinkedList),

care? 11 ArrayLists vs. LinkedLists to insert or remove an element at an interior location in an ArrayList requires shifting data  O(N) LinkedList is an alternative structure  stores elements in a sequence but allows for more efficient interior / get() and set() are already O(1) operations, so typical indexing loop suffices  provided for uniformity ( java.util.Collections methods require iterable classes) to implement an iterator, need to define a new class that can  access the underlying array ( /


Traffic Studies TS4273 TRAFFIC ENGINEERING. Reasons To Collect Data 1.Managing the physical system (replaced, repaired, anticipated schedule) 2.Investigating.

carried out by obtaining information from people who drive on the study site regarding their travel times, their experience of delays, and so forth. This method facilitates the collection of a large amount of data in a relatively short time. However, it requires the cooperation of the people contacted, since the result depends entirely on the information given by them. Origin-Destination Studies/


Collections The objectives of this chapter are: To outline the Collections infrastructure in Java To describe the various collection classes To discuss.

procedural languages, we are taught to separate the data from the management of data However, it is much easier to implement a data structure when the data is tightly coupled to the data structure. The leads to reimplementation of many common/) List subList(int fromIndex, int toIndex) Set Interface The Set interface also extends the Collection interface but does not add any methods to it. Collection classes which implement the Set interface have the add stipulation that Sets CANNOT contain duplicate elements/


Chapter Six Qualitative Research Methods

how they organize their world (e.g., activities) Contrast questions – ask participants what is meant by specific terminology Prus & Grills stress the value of the interview method in a multi-method approach © 2007 Pearson Education Canada Data collection Methods 3. Focus group interviews Interview format, but in a group setting 6-12 participants with common experience Dates back to the 1940s - used to assess effectiveness/


Nonsampling Error in Marketing Research

Response options (e.g., “unsure”) Attention loss Reversal of scale endpoints Distractions Fatigue Prompters { { } { Data Collection Errors with Online Surveys Multiple submissions by the same respondent (not able to identify such situations) Bogus respondents and// (acceptable sample error) balanced against the cost of data collection for that sample size. The Confidence Interval Method of Determining Sample Size There is only one method of determining sample size that allows the researcher to PREDETERMINE/


1 Historical-Comparative Methods CSLS/Boalt Miniseries on Empirical Research Methods, Workshop 2, Oct. 23, 2007 [See accompanying reference list] © 2007.

Prof. of Law, Scholar of College, 2004-07, Univ. of Minnesota 2 Introduction: Some continuity of themes & techniques from empirical methods for field research to historical-comparative methods Especially with respect to case selection, research design Field research sometimes combined with archival data collection & analysis, and both often combined with in-depth semi-structured interviewing techniques Social science empirical research about law –qualitative as/


SELECTING A DATA COLLECTION METHOD AND DATA SOURCE

choose a data the best data collection method (Table 22.1 for example) List the criteria for selection List possible data collection methods With the research question in mind, assess each data collection method according to the set criteria Decision-making grid (Table 15.1) TRYING OUT THE SELECTED DATA COLLECTION METHOD Pilot Study – carrying out all aspects of the data collection plan on a mini-scale Test data collection procedures Assess the quality of the data collected Data collection methods can/


CS1020 Data Structures and Algorithms I Lecture Note #4 Collection of Data.

47 Java Elements Array: - Declaration and common usage Generics: - Allowing operation on objects of various types Vector and ArrayList: - Dynamic-size arrays - Declaration and useful methods [CS1020 Lecture 4: Collection of Data] Practice Exercises 48 #12: Basic Statistics  Computing mean and standard deviation #13: Missing Digits  Using array of primitive type #14: Missing Digits version 2  Using Vector #15: Row and Column /


13-1 Collection Considerations Chapter 13 © Rick Mercer Data Structures with Ja ©Rick Mercer Data Structures with Java and JUnit.

with Java and JUnit 13-2 Outline Consider a Bag Abstract Data Type Java Interfaces Method headings only, must be implemented by a Java class (or two or many) Data Structures Collections Classes Generics With Object parameters With type parameters 13-3 Some Definitions Abstract Data Type (ADT) A set of data values and associated operations that are precisely specified independent of any particular implementation. Bag/


Chapter 17 Mixed Methods Designs

data collection that involves collecting qualitative data followed by quantitative data Researcher plans on the quantitative data to build on or explain the initial qualitative findings Educational Research 2e: Creswell Types of mixed methods designs I. Triangulation mixed methods Design + QUAN Data and Results QUAL Data and Results Interpretation II. Explanatory mixed methods Design QUAN Data and Results qual Data and Results Follow-up III. Exploratory mixed methods Design QUAL Data and Results quan Data/


Qualitative & Mixed Methods

, PA, Stange, KC. Practice-based research: The opportunity to create a learning discipline. In: The Textbook of Family Practice, 6th Edition. Rakel RE (ed.), W. B. Saunders Company, 2001. Qualitative Data Collection Methods In-depth interviews Narratives, detailed responses to probing questions Direct observation Field notes containing descriptions of activities, behaviors, actions, interactions, and processes Document analysis Written documents: records, memoranda, correspondence, reports/


Chapter 9 Qualitative Methods: Introduction and Data Collection.

Participant observationResearcher is participant with subjects Biographical methodsFull or partial life histories A. J. Veal & S. Darcy (2014) Research Methods for Sport Studies and Sport Management: A practical guide. London: Routledge The range of methods of qualitative data collection The range of methods of qualitative data collection (Fig. 9.2) TypeFeatures In-depth interviewsChecklist rather than questionnaire Usually small number of subjects Focus groupsGroups (5-12) with/


Mixed Methods Approach

, rather than combining them. It can be classified into four types: Data triangulation – using a variety of data sources in a study, which can help offset possible unrepresentative data. Methodological Triangulation – using a variety of data collection methods (surveys, interviews, case studies), which can give the researcher richer data. Investigator Triangulation – involving multiple researchers in a study, which can help to offset researcher biases in research design/


Copyright 2006 by Pearson Education 1 Building Java Programs Chapter 11: Java Collections Framework.

particular kinds of data, or particular operations on that data, in mind examples of collections: list, bag, stack, queue, set, map, graph Copyright 2006 by Pearson Education 5 Java collections framework Copyright 2006 by Pearson Education 6 Javas Collection interface The interface Collection in java.util represents many kinds of collections. Every collection has the following methods: Method nameDescription add( value ) adds the given value to the collection addAll( collection ) adds all/


1 Intelligence and Security Informatics for International Security: Information Sharing and Data Mining Hsinchun Chen, Ph.D. McClelland Professor of MIS.

There exist many laws, regulations, and agreements governing data collection, confidentiality, and reporting, which could directly impact the development and application of ISI technologies. Caveats for Data Mining 16 Framed in the context of domestic /SNA is capable of –Subgroup detection –Central member identification –Discovery of patterns of interaction SNA also includes visualization methods that present networks graphically. –The Smallest Space Analysis (SSA) approach (Wasserman & Faust, 1994) is /


Excursions in Modern Mathematics, 7e: 13.1 - 2Copyright © 2010 Pearson Education, Inc. 13 Collecting Statistical Data 13.1The Population 13.2Sampling.

.5The Capture-Recapture Method 13.6Clinical Studies Excursions in Modern Mathematics, 7e: 13.1 - 18Copyright © 2010 Pearson Education, Inc. The practical alternative to a census is to collect data only from some members of the population and use that data to draw conclusions and make inferences about the entire population. Statisticians call this approach a survey (or a poll when the data collection is done by/


1 © 2009 University of Wisconsin-Extension, Cooperative Extension, Program Development and Evaluation Collecting Data This is STEP 3 of the five steps.

) Happy (Quality) Kids 11 © 2009 University of Wisconsin-Extension, Cooperative Extension, Program Development and Evaluation Quantitative data collection methods produce numbers. Qualitative data collection methods produce words. Quantitative and qualitative each has its strengths and weaknesses. Quantitative methods are more structured and allow for aggregation and generalization. Qualitative methods are more open and provide for depth and richness. 12 © 2009 University of Wisconsin-Extension, Cooperative/


Data Collection.

process. Factors affecting selection of resource Purpose and scope of study Availability of time Availability of resources Degree of accuracy desired Statistical tools to be used Sources of data Method of data collection Method of Primary data collection Observation method Interview method Through questionnaires Through schedules Other methods Warranty cards Distributor audits Pantry audits Consumer panels Using mechanical devices Through projective techniques Depth interviews Content analysis Observation/


1 Promoting a RealWorld and Holistic approach to Impact Evaluation Designing Evaluations under Budget, Time, Data and Political Constraints Workshop for.

video recording  Project documents  Published reports  E-mail  Legal documents : birth and death certificates, property transfer documents marriage certificates  Posters  Decorations in the house  Clothing and gang insignia 113 Qualitative data collection methods Characteristics The researcher’s perspective is an integral part of what is recorded about the social world Scientific detachment is not possible Meanings given to social phenomena and situations must/


Method of data collection

, it often is expressed as a percentage of agreement among raters or observers or a coefficient of agreement that considers the element of chance (coefficient Kappa). Data Collection Methods Physiological. Observational. Interviews. Questionnaires. Records or available data. Physiological data collection Physiological and biological measurements involve the use of specialized equipment to determine physical and biological status of subjects. Such measures require specialized training. Such measures can/


Methodology Presentation.

classifications it was then possible to count sets of observable social facts and so produce statistics. For example Durkheim collected data on social facts such as the suicide rate and the membership of different religions.   Correlation The third /spend time and money collecting his/her own information. It may be unnecessary for a researcher to create some forms of data using primary methods when such data already exists Examination of trends/changes over time – Using statistical data drawn from a number/


Chapter 6 Qualitative Research Methods

how they organize their world (e.g., activities) Contrast questions – ask participants what is meant by specific terminology Prus & Grills stress the value of the interview method in a multi-method approach © 2007 Pearson Education Canada Data Collection Methods: 3. Focus Group Interviews Interview format, but in a group setting 6-12 participants with common experience Dates back to the 1940s – used to assess effectiveness/


Research Methods Ass. Professor, Community Medicine, Community Medicine Dept, College of Medicine.

in an experiment) ▪ Control group. (Subjects not exposed to the experimental variable in an experiment) Research Methods-Sherzad Ali Ismael- MODULE 4: Formulating the research design & Data collection methods 12  Example: Randomized controlled trial (clinical trial) Research Methods-Sherzad Ali Ismael- MODULE 4: Formulating the research design & Data collection methods 13  Cross-section. (Collect data at a particular time)  often employ the survey methodology (Easterby- Smith et al. 2008; Robson/


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