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http://bcs.wiley.com/he-bcs/Books?action=index&bcsId=4412&itemId=0470413549

1. Consider again the three samples of the speeds of seven cars given at the

beginning of this topic: Sample 1: 5, 25, 25, 25, 25, 25, 45; Sample 2: 5, 15, 20,

25, 30, 35, 45; and Sample 3: 5, 5, 5, 25, 45, 45, 45.

a. Look at the data in each sample and without doing any calculations, rank

the samples in order from smallest to largest standard deviation. Give reasons

for your ranking.

b. For each of the samples, create a table like the ones in Examples 17.1 and

17.2; for each sample, compute the deviation of each data value from the

mean, the squared deviations, and finally the standard deviation of the

data set.

c. Explain what the three standard deviations tell you about the data sets.

http://bcs.wiley.com/he-bcs/Books?action=index&bcsId=4412&itemId=0470413549

1. Consider again the three samples of the speeds of seven cars given at the

beginning of this topic: Sample 1: 5, 25, 25, 25, 25, 25, 45; Sample 2: 5, 15, 20,

25, 30, 35, 45; and Sample 3: 5, 5, 5, 25, 45, 45, 45.

a. Look at the data in each sample and without doing any calculations, rank

the samples in order from smallest to largest standard deviation. Give reasons

for your ranking.

b. For each of the samples, create a table like the ones in Examples 17.1 and

17.2; for each sample, compute the deviation of each data value from the

mean, the squared deviations, and finally the standard deviation of the

data set.

c. Explain what the three standard deviations tell you about the data sets.

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