If You Sent a Survey to a Representative Sample of 10,000

question 27

Multiple Choice

If you sent a survey to a representative sample of 10,000 graduating high school seniors asking them to report how many of their friends get drunk at least once a week, you should expect that about _____ would respond "yes."

• A) 200
• B) 500
• C) 1,000
• D) 2,400

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Definitions:

Variance

A statistical measure of the dispersion or spread in a set of data points, indicating how much the values differ from the mean of the set.

Variance

A measure of variability that denotes the average of the squared differences from the mean, showing how widely the values in a data set are spread.

Squared Deviations

Values obtained by subtracting the mean from each data point in a set, squaring the result to eliminate negative numbers, used in variance calculation.

Aptitude Test

An examination designed to measure a person's ability to develop skills or acquire knowledge, predicting future performance.