section 1.2 data classifications hawkes learning systems math courseware specialists copyright ©...
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Section 1.2
Data Classifications
HAWKES LEARNING SYSTEMS
math courseware specialists
Copyright © 2008 by Hawkes Learning
Systems/Quant Systems, Inc.
All rights reserved.
Qualitative Quantitative
Descriptions and labels
Counts and measurements
Qualitative vs. Quantitative:
Introduction to Statistics
1.2 Data Classifications
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• 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.
Qualitative• Student ID numbers
Qualitative
Classify as Qualitative or Quantitative:
Introduction to Statistics
1.2 Data Classifications
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Qualitative Quantitative
Continuous
Usually measurement
s
Continuous vs. Discrete:
Introduction to Statistics
1.2 Data Classifications
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DISCRETE
Usually counts of
things
• 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.
Discrete• The height of a door in inches.
Continuous
Classify as discrete or continuous:
Introduction to Statistics
1.2 Data Classifications
HAWKES LEARNING SYSTEMS
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Levels of Measurement
NominalNames
OrdinalOrder
Interval0 is a
placeholder
Ratio0 means the absence of something
Introduction to Statistics
1.2 Data Classifications
HAWKES LEARNING SYSTEMS
math courseware specialists
• 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
Determine the level of measurement:
Introduction to Statistics
1.2 Data Classifications
HAWKES LEARNING SYSTEMS
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