The Following Data Represent Scores on a 15 Point Aptitude

question 78

Essay

The following data represent scores on a 15 point aptitude test: 8, 10, 15, 12, 14, and 13.
a. Complete the sample mean for the original data.
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Subtract 5 from every observation and complete the sample mean for the new data.
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b. Complete the sample variance for the original data.
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Subtract 5 from every observation and complete the sample variance for the new data.
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c. What effect, if any, does subtracting 5 from every observation have on the sample mean and sample variance?
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Definitions:

Research Design

A strategic framework for conducting research that outlines how data will be collected, analyzed, and interpreted.

Grounded Theory

An inductive method of generating theory from data by creating categories in which to place data and then looking for relationships among categories.

Inductive Method

A research approach starting with observations or data to develop broader generalizations and theories.

Categories

Categories are classifications or groups used to organize objects, people, or concepts based on shared qualities or characteristics.