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Section 1.2 Data Classifications

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1 Section 1.2 Data Classifications
Copyright © 2008 by Hawkes Learning Systems/Quant Systems, Inc. All rights reserved. HAWKES LEARNING SYSTEMS math courseware specialists Section 1.2 Data Classifications

2 Descriptions and labels Counts and measurements
HAWKES LEARNING SYSTEMS math courseware specialists Introduction to Statistics 1.2 Data Classifications Qualitative vs. Quantitative: Qualitative Quantitative Descriptions and labels Counts and measurements

3 The weights of members of the football team. Quantitative
HAWKES LEARNING SYSTEMS math courseware specialists Introduction to Statistics 1.2 Data Classifications Classify as Qualitative or Quantitative: The weights of members of the football team. Quantitative The flavors of Ben and Jerry’s Ice Cream. Qualitative The jersey numbers of a women’s basketball team. Student ID numbers

4 Usually counts of things
HAWKES LEARNING SYSTEMS math courseware specialists Introduction to Statistics 1.2 Data Classifications Continuous vs. Discrete: Qualitative Quantitative DISCRETE Continuous Usually counts of things Usually measurements

5 The temperature in Fahrenheit of cities in North Mississippi.
HAWKES LEARNING SYSTEMS math courseware specialists Introduction to Statistics 1.2 Data Classifications Classify as discrete or continuous: The temperature in Fahrenheit of cities in North Mississippi. Continuous The number of rooms in a house. Discrete The number of peanuts in a jar. The height of a door in inches.

6 0 means the absence of something
HAWKES LEARNING SYSTEMS math courseware specialists Introduction to Statistics 1.2 Data Classifications Levels of Measurement Ratio 0 means the absence of something Interval 0 is a placeholder Ordinal Order Nominal Names

7 Quantitative – Interval The colors contained in a box of crayons.
HAWKES LEARNING SYSTEMS math courseware specialists Introduction to Statistics 1.2 Data Classifications Determine the level of measurement: Today’s high temperature (in Fahrenheit) for varying cities across the U.S. Quantitative – Interval The colors contained in a box of crayons. Qualitative – Nominal The boiling point (in Kelvin’s) for varying chemical compounds. Quantitative – Ratio The individual page numbers at the bottom of each page in the statistics book. Quantitative – Ordinal

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