Statistics Review

Find the mean of the annual income

• 30000

• 48800

• 50000

• 42400

Here is a list of test scores: 67, 90, 89, 75, 67, 70, 99, 84, and 85. What is the mode?

What percentage of scores are between 73 and 83?

• 34%

• 47.5%

• 68%

• 81.5%

a) Approximately how many physics students scored between 78 and 84?

• 1360

• 727

• 720

• 680

The grades for the statistic classwork in a class period are as follows:

70, 80, 100, 90, 95, 100, 80, 65, 60, 80

Find the mean and standard deviation

• mean: 82 Standard Deviation: 13.5

• mean: 78 Standard Deviation: 12.5

• mean: 85 Standard Deviation: 13.5

• mean 75: Standard Deviation: 14.2

1. A politician wants to know what issues are most important to the voters in his district. Identify the sampling method and state any bias in the method. a. The politician sets up a questionnaire on his website.

• convenience

• voluntary

• systematic

• random

1. A politician wants to k

now what issues are most important to the voters in his district. Identify the sampling method and state any bias in the method. a. The politician uses the phone book and selects every 50^th citizen to call.

• convenience

• voluntary

• systematic

• random

Susan keeps track of the number of tickets sold for each play presented at The Community Theater. Within how many standard deviations of the mean do all the values fall?

137, 134, 91, 61, 150, 155, 110, 148, 90, 169, 67, 61

• 5

• 4

• 3

• 2

The scores on an exam are normally distributed, with a mean of 77 and a standard deviation of 10. What percent of the scores are greater than 87?

• 68%

• 16%

• 84%

• 2.5%

What is the median of the following data set?

25, 42, 36, 12, 19

• 36

• 25

• 39

• 26.5

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5