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AP Statistics Unit 1 Quiz

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Questions and Answers

Which of the following is NOT a measure of center in statistics?

Mean

Range (correct)

Mode

Median

What is the formula for calculating the standard deviation of a sample?

sqrt((sum of squared differences from the mean) / (number of data values))

(sum of all data values) / (number of data values)

sqrt((sum of all data values) / (number of data values))

sqrt((sum of squared differences from the mean) / (number of data values - 1)) (correct)

Which of the following is a characteristic of a normal distribution?

Skewed to the left

Skewed to the right

Symmetric (correct)

Bimodal

Study Notes

Measures of Center

Mode is a measure of center that represents the most frequently occurring value in a dataset.

Standard Deviation

The formula for calculating the standard deviation of a sample is: σ = √[(Σ(xi - x̄)²) / (n - 1)].
This formula calculates the spread of a sample dataset from its mean value.

Normal Distribution

A characteristic of a normal distribution is that it is symmetric and bell-shaped, with the mean, median, and mode all equal.
In a normal distribution, about 68% of the data falls within one standard deviation of the mean.

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Description

Test your knowledge of AP statistics unit 1 with this quiz! Determine which measure of center is NOT used in statistics, identify the formula for calculating sample standard deviation, and recognize the characteristics of a normal distribution.