Summarizing Numeric Data with Numerical Summaries Including Mean, Median, Range, and Interquartile Range

• 53

• 51

• 55

• 50

What is the most appropriate measure of center?

• range

• median

• mean

• IQR

Find the interquartile range of the data set

• 76

• 43

• 16

• 92

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Which measure of spread should be used to describe the distribution?

• standard deviation

• interquartile range

• median

• mean

Select the options that measure spread.

• Standard Deviation

• Interquartile Range (IQR)

• Range

• Median

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a measure of spread for a set of data

• range

• interquartile range

• maximum value

• minimum value

Select the ways to describe the SPREAD of a set of numbers.

• Mean

• Variance

• Standard Deviation

• Range

• Interquartile Range

Which set of data has a range with the greatest measure of spread?

• 40, 31, 28, 34, 23

• 12, 24, 35, 16, 30

• 12, 21, 32, 8, 15

• 26, 36, 41, 30, 48

Match each measure of spread to its definition.

• Interquartile range

• Order the data, split it down the middle, find the median of each half (called LQ and UQ), and then subtract

• Range

• The difference between the largest and smallest data points

• Mean absolute deviation

• The average of each data point's positive difference from the mean

The chart on the left shows the statistics on test scores in period 1 and period 5. Which is true?

• The average test score is higher for period 5, but the data is more spread out.

• The average test score is higher for period 1, but the data is more spread out.

• The average test score is higher for period 5, and the data is more consistent (closer to the mean) than period 1.

• The average test score is higher for period 1, and the data is more consistent (closer to the mean) than period 5.

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