Module 8

Joseph is conducting a survey to determine the blood types of 100 people who have come to give blood at a blood donor clinic. Which of the following questions is an appropriate statistical question for this survey?

• How many people at the clinic have blood type AB?

• Which blood type does the least number of people have?

• What is the blood type of each person at the clinic?

• What is the average age of people with the most common blood type?

After conducting a survey of all his classmates, Luke discovers that the amount of money everyone spends buying snacks each month has a mean of $38. What does the mean say about the amount his classmates spend on snacks?

• The majority of his classmates spend $38 per month buying snacks.

• Half of his classmates spend more than $38 per month buying snacks.

• Half of his classmates spend exactly $38 per month buying snacks.

• If the amount spent on snacks per month by all his classmates is leveled, that amount would be $38.

What is the mean absolute deviation for 9, 7, 6, 8, 7, and 5?

• 1

• 2

• 6

• 7

Consider the following dot plot. Of the following statements, which two characteristics of this dot plot make the median a better choice than the mean to summarize the center of the distribution?

• The mean is equal to the median and the data are symmetric.

• The peak is equal to the median and the data are skewed.

• The data are skewed and there is an outlier.

• The data are symmetric and there is an outlier.

Mia creates a box plot using 28, 34, 40, 24, 44, 49, and 32 as the data. Which of the following box plots shows the data accurately?

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The histogram shows the number of prizes won by different numbers of students at a quiz competition. Which of the following statements is correct regarding the number of students and the number of prizes won?

• A total of 10 students won all the prizes.

• Four students won 12, 13, 14, 15, 16, or 17 prizes.

• A total of 10 prizes were won by all the students.

• Four prizes were won by 12, 13, 14, 15, 16, or 17 students.v

The scores of several classmates on a math test are shown below:

91 ,77, 90 ,79, 81, 85, 86, 76, 75, 80

What is the median score for these students?

• 80

• 80.5

• 81

• 81.5

Patricia recorded the different types of pizza her friends like in the table below:

Pizza TypeNumber of Friends

Cheese 3

Mushroom 1

Pepperoni 4

Supreme 2

Which of the following plots represents the data in the table? (3 points)

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