Directions: Choose the Best Answer Based on the Information You

question 15

Multiple Choice

Directions: Choose the best answer based on the information you read in Chapter 3. ​ Which of the following parts of a textbook can be found near the beginning?

• A)glossary
• B)table of contents
• C)index
• D)appendix

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Definitions:

Mean Income

The average income calculated by dividing the total income of a group by the number of individuals or households in that group.

Statistic

A numerical measure that describes some characteristic of a sample, such as its mean or variance, used for making inferences about a population.

Interquartile Range

A measure of statistical variability, representing the difference between the 75th (upper quartile) and 25th (lower quartile) percentiles.

Variance

A gauge for the extent of dispersion in a collection of data, derived by the average of squared differences relative to the mean.