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Basic Statistics 1 Measurement -- Professor Stipak presents --
Simple Statistics Example How do we report motor vehicle theft rates?
Simple Statistics Example How do we report motor vehicle theft rates? Accepted practice: Thefts per 1000 population Alternative: Thefts per 1000 motor vehicles
Motor Vehicle Theft Rates: Thefts / 1000 Population New York City12 Chicago16 Philadelphia19 Los Angeles20 Detroit22
Motor Vehicle Theft Rates: Thefts / 1000 Motor Vehicles Los Angeles34 Chicago45 Detroit47 Philadelphia49 New York City53
Measurement: Importance Measurement Data Statistics
Measurement: Overview Basic Concepts Levels of Measurement Validity/Reliability
Measurement: Basic Concepts UOA / Case Variable Value –Record data in a table: rows-cases, cols-variables
Measurement: Levels Ratio Interval Ordinal Nominal
Data In Public Agencies Types of data in agencies Sources of data Types of datasets, examples: census data, merged data
Measurement: Quality Reliability of Measurement Validity of Measurement Measurement Error
1 Diplomas Now / Talent Development Secondary Footprint – School Year Seattle 2 schools Los Angeles 3 schools San Antonio 2 schools Baton Rouge.
Datasets and Variables We want to answer questions We want to use data for this purpose Observations of characteristics of cases Case: person, city, organization,
Operationalizing Concepts Issues in operationally defining your concepts, validity, reliability and scales.
Institute for Urban Policy and Research Analysis, Professor Tang November 19, 2013 Ryan Robinson City Demographer Planning & Development Review Department.
Week #12 Assignment For your Week #12 assignment, you will write your Methods and Results Chapters for your descriptive statistics.
Statistics: Basic Concepts. Overview Survey objective: – Collect data from a smaller part of a larger group to learn something about the larger group.
Impacts of Sample Sizes in the American Community Survey Northwestern University Transportation Center.
Measurement Concepts. CONSTRUCT VALIDITY OF MEASURES Indicators of Construct Validity Face validity Aggression questionnaire Not enough to really determine.
3/3/2016Copyright Ed Lipinski and Mesa Community College, All rights reserved. 1 Research Methods Summer 2009 Making Systematic Observations.
Methodology v v Type of research v v Design v v Data gathering procedures v v Data analysis procedures v v Population v v Sample and sampling.
Types of Control I. Measurement Control III. Experimental Control II. Statistical Control (Reliability and Validity) (Internal Validity) (External Validity)
Probability in Sampling. Key Concepts l Statistical terms in sampling l Sampling error l The sampling distribution.
Chapter 6 Measuring Instruments. ALL VARIABLES ARE NOT MEASURED THE SAME Nominal Variables Ordinal Variables Interval Variables Ratio Variables.
Do Now and Example for Notebook In a recent study, volunteers who had 8 hours of sleep were three times more likely to answer questions correctly on a.
Chapter 14 Analyzing Quantitative Data. LEVELS OF MEASUREMENT Nominal Measurement Nominal Measurement Ordinal Measurement Ordinal Measurement Interval.
Introduction to Statistics in Geography Chapter 1 of the textbook Pages 1-31.
DESCRIBING DATA: 1. FREQUENCIES and FREQUENCY DISTRIBUTIONS.
Chapter 7 Measuring Instruments. ALL VARIABLES ARE NOT MEASURED THE SAME Nominal Variables Ordinal Variables Interval Variables Ratio Variables.
1 PSY 230, Jacobs Welcome to PSY 230 Introduction to Statistics Elizabeth Jacobs, Ph.D.
Chapter 3 Measures of Central Tendency Three statistics: Mode, Median, Mean Mode median, and mean are three different statistics. They report three different.
Business Research Method Measurement, Scaling, Reliability, Validity M.Com-II.
1 UNIT 13: DATA ANALYSIS. 2 A. Editing, Coding and Computer Entry Editing in field i.e after completion of each interview/questionnaire. Editing again.
Levels of measurement Question 1 Age in years? Ratio and discrete Is the following statement valid? A person who is 44 years old is twice as old as someone.
QBA 260 Chapter 1. Chapter 1 Topics Samples and Populations Samples and Populations Types of Data Types of Data Variables – Independent and Dependent.
What is a Measurement? Concept of measurement is intuitively simple Measure something two concepts involved The thing you are measuring The measurement.
The General (LISREL) SEM model Ordinal variables p Alternative Fit indices p Error of Approximation p Model modification p
MATH Section 7.2. Confidence Interval from a Proportion.
Chapter 9 Correlational Research Designs. Correlation Acceptable terminology for the pattern of data in a correlation: *Correlation between variables.
Significance Testing 10/15/2013. Readings Chapter 3 Proposing Explanations, Framing Hypotheses, and Making Comparisons (Pollock) (pp ) Chapter 5.
Correlation Patterns. Correlation Coefficient A statistical measure of the covariation or association between two variables. Are dollar sales.
The US in 1900 and today Jan 19, Population million Foreign born 7.4% Black 11.5% Hispanic ? Under 1840% Over 654% Married (age 18+)(60%)
Chapter 13 Analyzing Quantitative data. LEVELS OF MEASUREMENT Nominal Measurement Ordinal Measurement Interval Measurement Ratio Measurement.
Research Methodology Lecture No :26 (Hypothesis Testing – Relationship)
Statistics Introduction Part 2. Statistics Warm-up Classify the following as a) impossible, b) possible, but very unlikely, or c) possible and likely:
MULTIVARIATE ANALYSIS. Multivariate analysis It refers to all statistical techniques that simultaneously analyze multiple measurements on objects under.
The main cities Washington Washington Chicago New York Chicago New York Boston Los Angeles Boston Los Angeles San Francisco.
Data Analysis Using R: 2. Descriptive Statistics Tuan V. Nguyen Garvan Institute of Medical Research, Sydney, Australia.
Chapter 3 Measures of Central Tendency. Chapter Outline Introduction The Mode The Median Other Measures of Position: Percentiles, Deciles, and.
Do Now Take out the article you brought for homework. Describe how it uses statistics. If you didn’t bring an article… maybe just use something that you.
Business 205. Review of Previous Class Milestone #1 Groups Math Review Symbolic Manipulation Excel Review.
Nominal Level Measurement n numbers used as ways to identify or name categories n numbers do not indicate degrees of a variable but simple groupings of.
The Black Panthers By: Alex Needles. What the Black Panthers were The Black Panthers were initially formed to protect local communities from brutality.
1 Measurement Adapted from The Research Methods Knowledge Base, William Trochim (2006). & Methods for Social Researchers in Developing Counries, The Ahfad.
McGraw-Hill/IrwinCopyright © 2014 by The McGraw-Hill Companies, Inc. All rights reserved. MEASUREMENT Chapter 11.
Statistical Decision-Making Process: Decision Problem Statistical Plan Data Description and Summary Analysis and Conclusions Testing Validity of Results.
Definition & Measurement “measurement is the beginning of science, … until you can measure something, your knowledge is meager and unsatisfactory” Lord.
Effects: Example Low High Variable 2.
B AD 6243: Applied Univariate Statistics Introduction to Statistical Concepts Professor Laku Chidambaram Price College of Business University of Oklahoma.
1 Lecture 2: Types of measurement Purposes of measurement Types and sources of data Reliability and validity Levels of measurement Types of scale.
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