Pretest

Question 1

According to the plot, 75 percent of students read less than

Revolt · Accepted Answer

35 pages.

Question 2

Which measure would be the most appropriate to describe the center of the data in the histogram?

Revolt · Accepted Answer

median

Question 3

Which of the following is most likely true?

Revolt · Accepted Answer

The mean and median are both in the interval 6 - 10 .

Question 4

Gemma is creating a histogram based on the table. Salary Range Number of People 0 - 19 dollars comma 999 40 20 dollars comma 000 - 39 dollars comma 999 30 40 dollars comma 000 - 59 dollars comma 999 35 Which scale can she use for the vertical axis such that the difference in the heights of the bars is maximized?

Revolt · Accepted Answer

25 - 40

Question 5

Indira makes a box-and-whisker plot of her data. She finds that the distance from the minimum value to the first quartile is greater than the distance between the third quartile and the maximum value. Which is most likely true?

Revolt · Accepted Answer

The mean is less than the median because the data is skewed to the left.

Question 6

A poll asks shoppers at the mall how many cups of water they typically drink in a day. The results of the poll are listed. 3, 5, 5, 6, 6, 6, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 10, 10, 10, 10, 11 What is value of the first quartile?

Revolt · Accepted Answer

6

Question 7

The histograms show the ages of dogs at four different shelters. For which set of data is the mean most likely greater than the median?

Revolt · Accepted Answer

Image with description A bar graph represents the ages of dogs at five different shelters. The horizontal axis lists 0-1 to 8-9 and is labeled as age. The vertical axis lists 0 to 4 and is labeled as the number of dogs. There are 5 bars on the graph. The first bar represents the 0-1 age group of dogs and shows shelter for 1 dog, the second bar represents the 2-3 age group of dogs and shows shelter for 4 dogs, the third bar represents the 4-5 age group of dogs and shows shelter for 2 dogs, the fourth bar represents the 6-7 age group of dogs and shows shelter for 0 dogs, and the fifth bar represents the 8-9 age group of dogs and shows shelter for 1 dog.

Question 8

A histogram shows data that is skewed to the right. Which most likely describes the relationship between the mean and the median?

Revolt · Accepted Answer

The mean is greater than the median. The rightmost values in the data set raise the mean more than the median.

Question 9

Which best represents the center of the data set?

Revolt · Accepted Answer

median

Question 10

Which measure is most appropriate to describe the center of the data in the stem-and-leaf plot?

Revolt · Accepted Answer

median

Pretest Answers

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