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AP Statistics Chapter 1 review “Exploring Data”

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From which statistic can you recover the total value of the data set, if you know how many entries there are? 1.Range 2.Median 3.Variance 4.Mean

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If a group of high school biology students were given an anatomy exam developed for medical school students, it is likely that the _____ would be larger than the _____. 1.mode; median 2.mode; mean 3.median; mean 4.mean;median

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Which of the following is not affected by the actual magnitude of every value in the data set? 1.Arithmetic mean 2.Median 3.Range 4.Standard deviation

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If 400 test scores are distributed with a mean of 150 and s = 9, the variance of the test scores is: 1.2.67 2.3 3.44.44 4.81

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A set of 10 scores has a mean of 50 and s = 8. If you add 2 points to every score, the new standard deviation will be: 1.6 2.8 3.10 4.Cannot be determined

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A set of 10 scores has a mean of 50 and s = 8. If you double each score, the new “s” will be: 1.4 2.8 3.16 4.64

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Which of the following concepts is out of place with the other three? 1.Mean 2.Standard deviation 3.Range 4.IQR

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If there are 20 entries in an ordered list of data, the median will be the 10 th entry. 1.True 2.False

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Which numerical summary is better for skewed data? 1.5-number summary 2.Mean, standard deviation 3.Center, spread, shape 4.1.5*IQR

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“Arithmetic mean” is to “central tendency” as “standard deviation” is to _________. 1.Average 2.Variability 3.Median 4.Range

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Two classes took the same exam. Class M’s scores showed s = 6.4 and class Q’s s = 4.0. Which is true? 1.Class M had a higher average 2.Variance of class Q is 2 3.Class Q is more alike than class M 4.Class M is 16 times more dispersed

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Given scores: 2, 6, 4, 3, 5. How far, on average, do the scores deviate from the mean? 1.1.2 points 2.4.0 points 3.0 points 4.6.0 points

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