AP Statistics Chapter 3 Review

• A

• B

• C

• D

• E

• A

• B

• C

• D

• E

What percent of people are greater than 3 standard deviations above the mean?

• .15%

• 34%

• 68%

• 2.35%

What percent of people are within 1 standard deviation of the mean?

• 99.7%

• 34%

• 68%

• 95%

What percent of people are within 2 standard deviations of the mean?

• 99.7%

• 34%

• 68%

• 95%

What percent of people are within 3 standard deviations of the mean?

• 99.7%

• 34%

• 68%

• 95%

Z < 1.23 = %

Z < 1.68 = %

What is the median of the data?

• 200

• 100

• 90

• 140

What percentage of the data is between 90 and 140?

• 25 %

• 50%

• 75%

• 100%