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Data, Data, Data.

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Presentation on theme: "Data, Data, Data."— Presentation transcript:

1 Data, Data, Data

2 Data is information, facts, or numbers which describe something.
Data, Data, Data What is data? Data is information, facts, or numbers which describe something.

3 Data, Data, Data Types of Data 1. Categorical Data 2. Numerical Data

4 Data, Data, Data Categorical Data Data which has been grouped into categories, such as colors, types of music, favorite stores, etc. You might use a “What is your favorite ___ ?” question for this type of data.

5 Data, Data, Data Numerical Data Data which counts or measures, such as number of pets, test score, height, etc. You might use a “How many ____?” type question for this type of data.

6 Data, Data, Data Categorical Categorical Numerical Categorical
Read each of the questions below and identify which are categorical and which are numerical. Categorical questions have words or categories as answers, and Numerical questions have numbers as answers. Categorical In which season were you born? What is your favorite kind of pet? How many pets do you have? Who is your favorite actress? How much time do you spend watching television in a day? What’s the most points you’ve scored in a game? How many movies did you watch in the past week? Categorical Numerical Categorical Numerical Numerical Numerical

7 Number of Fingerprint Patterns
Data, Data, Data Ways To Represent Data Used when collecting data Number of Fingerprint Patterns Whorl Arch Loop 7 4 5 l l l l l l l l l l l l l l Frequency Table

8 Frequency Table Characteristics
Includes a title Can be used to collect either numerical OR categorical data Remember to have a column or row for tally marks and one for the frequency (the total number of tally marks)

9 times each value occurs
Data, Data, Data Ways To Represent Data Student Scores Used to show number of times each value occurs X X X X X X X X X X X X X X X X X X X X X X X X X X X X X Line Plot

10 Line Plot Characteristics
Includes a title Uses a number line (so there should be arrows on the ends) Uses x’s to show the count Be sure to use an equally spaced scale (if you start going by 2’s, keep going by 2’s) Used to collect NUMERICAL data only

11 amounts of similar things
Data, Data, Data Ways To Represent Data Used to compare amounts of similar things Bar Graph

12 Bar Graph Characteristics
Includes a title Be sure both axes are labeled using an equally space scale (the x-axis is horizontal  , & the y-axis if vertical) Bars can be vertical or horizontal Space between bars Bars are equal width We’ll use a bar graph to display categorical data

13 Ways To Represent Data Pictograph Data, Data, Data Uses symbols to
Lunch Line Uses symbols to compare data Line Number of Students A B C Key = 10 students Pictograph

14 Pictograph Characteristics
Includes a title Includes a key to show how much each picture/symbol represents Can be vertical or horizontal Pictographs represent categorical data

15 Ways To Represent Data Line Graph Data, Data, Data Used to show change
in data over time Line Graph

16 Line Graph Characteristics
Includes a title Both axes need to be labeled (use an equally spaced scale) Uses line segments to connect data points Used to show numerical data

17 Ways To Represent Data Stem-and Leaf Plot Data, Data, Data
Organizes data from least to greatest Ways To Represent Data Test Scores Stem Leaves 6 7 8 Stem-and Leaf Plot

18 Stem-and-Leaf Characteristics
Includes a title Includes a key to show how to read a stem-and-leaf plot Be sure numbers are ordered least-to-greatest The digits in the ones place are the leaves in your plot

19 Ways To Represent Data Histogram Data, Data, Data Used to show
continuous data Histogram

20 Histogram Characteristics
Includes a title Both axes must be labeled Uses intervals of numbers (for example: 0 -2, 3 – 5, 6 – 8, etc.) Bars touch one another because the data is continuous in a histogram Used to show numerical data


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