Unit 10 Practice Test

Which of the following is closest to the percent of students who scored less than a 16 on the quiz?

• 8%

• 50%

• 29%

• 44%

Which of the following would be the median score of this data set?

• 15.5

• 16

• 16.5

• 17

Which of the following represents the range of the scores?

• 8

• 15

• 12

• 20

The high temperatures in March in Dutchess County, New York, are shown in the box plot shown above. Which of the following is the median high temperature?

• 28

• 36

• 40

• 48

A local babysitting group takes care of 8 children on Saturday morning. The children's ages are shown below.

4, 7, 6, 8, 4, 5, 6, 4

 

      Which of the following is the mean age of this group of children?

• 5.5

• 5.9

• 6.4

• 6.7

Which of the following is the interquartile range of the data set shown in the box plot above?

• 110

• 60

• 55

• 85

Which of the following data sets would have a standard deviation closest to zero?

• {1, 3, 4, 6, 9}

• {15, 18, 20, 25}

• {6, 6, 6, 7, 7}

• {1, 1, 3, 3, 7}

A sample of ten large eggs were weighed with the results shown below, in grams.

 

58, 64, 61, 56, 60, 57, 60, 62, 59, 68

 

      Which of the following is this sample's standard deviation to the nearest tenth of a gram?

• 2.7

• 3.5

• 4.8

• 5.1

A survey of 52 graduating seniors was conducted to determine if there was a connection between the gender of the student and whether they were going on to college. Which of the following represents the proportion of those going to college who are male?

• 0.53

• 0.31

• 0.55

• 0.16

Which of the following correlation coefficient values below indicates the strongest correlation between the two variables?

• r = 0.78

• r = -0.54

• r = 0.12

• r = -0.97