Quiz about 7.SP.3 Measure of Center

Question 1

Use the dot plots representing the number of siblings of students in each class.

Compare the centers of the dot plots by finding the medians.

Accepted Answer

The median for each class is 2

Answer

The median for each class is 3.5

Answer

The median for each class is 3

Answer

The median for each class is 2.5

Question 2

Compare the shapes of the box plots.

Accepted Answer

Overall the scores of Class A are slightly higher, and the ranges of the box plots appear to be very similar.

Answer

Overall the scores of Class B are slightly higher, and the ranges of the box plots appear to be very similar.

Answer

Overall the scores of Class A are slightly higher, and the ranges of the box plots appear to be very far different.

Answer

Overall the scores of Class B are slightly higher, and the ranges of the box plots appear to be very far different.

Question 3

Compare the centers of the box plots.

Accepted Answer

The median score for Class A is 10 points higher than for Class B.

Answer

The median score for Class A is 5 points higher than for Class B.

Answer

The median score for Class A is 10 points lower than for Class B.

Answer

The median score for Class A is 5 points lower than for Class B.

Question 4

Compare the spreads of the box plots.

Accepted Answer

Class A has an IQR of 30, Class B has an IQR of 35. Both overall ranges are 70

Answer

Class A has an IQR of 40, Class B has an IQR of 35. Both overall ranges are 80

Answer

Class A has an IQR of 30, Class B has an IQR of 45. Both overall ranges are 80

Answer

Class A has an IQR of 40, Class B has an IQR of 45. Both overall ranges are 70

Question 5

Which best represents the Interquartile Range

Accepted Answer

15

Answer

93

Answer

85

Answer

78

Question 6

Which box and whisker plot shows more "spread out" data?

Accepted Answer

Bottom plot

Answer

Top plot

Question 7

Find the Median of the data set

Accepted Answer

86

Answer

82

Answer

88

Answer

92

Question 8

What is another word for average?

Accepted Answer

Mean

Answer

Median

Answer

Mode

Answer

Range

Question 9

The number of miles that Jenna cycled each week for a 7-week period is shown:

36, 42, 28, 52, 48, 36, 31

What is the median number of miles Jenna cycled?

Accepted Answer

36

Answer

24

Answer

39

Answer

52

Question 10

What is the range of speeds tested?

Accepted Answer

0.5 mph

Answer

0.3 mph

Answer

1.5 mph

Answer

1.3 mph

Question 11

What conclusion can Ms. Long make about the performance of her first- and second-period classes?

Accepted Answer

The second-period class scores had a higher mean than the first-period class scores.

Answer

The first-period class had a higher median score than the second-period class.

Answer

The first-period class scores had a greater range than the second-period class scores.

Answer

The second-period class scores had a greater mean absolute deviation than the first-period class scores.

Question 12

The distributions below show the number of hours Bill and Vincent spent exercising weekly. Which statement correctly compares the distributions of their exercise?

Accepted Answer

Bill's median number of hours spent exercising is less than Vincent's average number of hours spent exercising.

Answer

Bill's average number of hours spent exercising is more than Vincent's average number of hours spent exercising.

Answer

Bill's median number of hours spent exercising is more than Vincent's median number of hours spent exercising.

Answer

Bill's average number of hours spent exercising is more than than Vincent's median number of hours spent exercising.

Question 13

The data sets below show the ages of the starting members of two college football teams.

Team 1: 21, 25, 20, 18, 24, 21, 21, 20, 24, 23, 22Team 2: 19, 18, 22, 20, 21, 20, 23, 23, 23, 25, 19

Based on these sets of data, which of the following statements is correct?

Accepted Answer

The mode of the ages on Team 1 is less than the mode of the ages on Team 2, and the median of the ages on Team 1 is equal to the median of the ages on team 2.

Answer

The mode of the ages on Team 1 is greater than the mode of the ages on Team 2, and the median of the ages on Team 1 is less than the median of the ages on team 2

Answer

The mode of the ages on Team 1 is less than the mode of the ages on Team 2, and the median of the ages on Team 1 is greater than the median of the ages on team 2

Answer

The mode of the ages on Team 1 is greater than the mode of the ages on Team 2, and the median of the ages on Team 1 is greater than the median of the ages on team 2

Question 14

The box plots compare the test scores of students in two different classes, math and history.

Which statement correctly compares the two data sets?

Accepted Answer

The median math test score is about 6 points lower than the median history test score

Answer

The median math test score is about half of the median history test score

Answer

The difference in the medians is about half of the range of math test scores.

Answer

The median math test score is about 6 points higher than the median history test score

Question 15

Tia helps run her school's concession stand during football games. Over the course of the season, she tracks how many hamburgers and hotdogs are sold at each game and records the data in the table below. Based on the data, which statement is true?

Accepted Answer

The median number of hamburgers sold is greater the median number of hotdogs sold

Answer

The mean number of hamburgers sold is less than the number of mean hotdogs sold.

Answer

The mean number of hamburgers sold is greater the mean number of hotdogs sold

Answer

The median number of hamburgers sold is less than the median number of hotdogs sold

Question 16

The box and whisker plots below, illustrate the scores earned by 2 biology classes on a recent test.

Select all statements that are supported by the plots above.

Accepted Answer

The range of the 3^rd period scores is less than the range of the 5^th period scores.

Accepted Answer

The interquartile range is the same for both classes.

Accepted Answer

The 3^rd period class has a higher median but has a lower range than the 5^th period class.

Answer

The median of the 5^th period scores is greater than the median of the 3^rd period scores.

Answer

The number of students who took the test is larger in the 5^th period class than in the 3^rd period class

Question 17

The box-and-whisker plots below depict the number of books read by 6th and 7th graders over the last year. Which statement is supported by the plots?

Accepted Answer

The range of the number of books read by 6th graders is less than the range of the number of books read by 7th graders

Answer

The mean number of books read by 6th graders is less than the mean number of books read by 7th graders

Answer

The median number of books read by 6th graders is less than the median number of books read by 7th graders.

Answer

The number of students in the 6th grade is less the number of students of students in the 7th grade

Question 18

Jack and his twin brother Bill kept track of how much they earned mowing yards during the summer weeks. Their earnings are listed on the chart below.

Which statement below is true about this data?

Accepted Answer

Bill's earnings have a greater range than Jack's earnings

Answer

Jack's earnings have a greater range than Bill's earnings.

Answer

Jack's earnings show a greater variability than Bill's earnings

Answer

Bill's earnings have a greater median than Jack's earnings

Question 19

To find the mean of a set of numbers, add up all the items and divide by...

Accepted Answer

The number of items

Answer

2

Answer

The minimum

Answer

The maximum

Question 20

What is the mode?

Accepted Answer

number occuring the most

Answer

the average

Answer

Difference between maximum and minimum

Answer

the middle number

Question 21

What is the range?

Accepted Answer

biggest-smallest

Answer

average

Answer

the middle #

Answer

# happening the most

Question 22

Find the mean of these numbers:
5,11,2,12,4,2

Accepted Answer

6

Answer

4.1

Answer

4.5

Answer

4

Question 23

At Donald's Donuts the number of donut holes in a bag can vary. Help Donald find the mode.
12,10,10,10,13,12,11,13,10

Accepted Answer

10

Answer

13

Answer

12

Answer

11

Question 24

Roger bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the range of Roger's scores?

Accepted Answer

66

Answer

193

Answer

127

Answer

60

Question 25

The median is the __________________ number (after you put them in order).

Accepted Answer

middle

Answer

first

Answer

last

Answer

one you see most

Question 26

Find the mean of these numbers:
4,2,5,6,3

Accepted Answer

4

Answer

2

Answer

5

Answer

6

Question 27

Johnathan scored 5, 9, 25, 12, 7, 0, 9 points in his first 7 games of the season. Is there an outlier in Johnathan's scoring?

Accepted Answer

Yes; 25

Answer

Yes; 0

Answer

No

Answer

Yes; 9

Question 28

Donald paid $3.95 for lunch on Monday, $5.36 on Tuesday, and $6 from Wednesday to Friday. What was Donald average cost for lunch during the week?

Accepted Answer

$5.46

Answer

$9.10

Answer

$3.06

Answer

$5.10

Question 29

Christa's mother is 45. Her uncles are 35, 35, 30 and her aunt is 37. What is the mean of Christa's mother, aunt, and uncle's ages?

Accepted Answer

36.4

Answer

37.4

Answer

60.7

Answer

35

Question 30

Brittany just started collecting marbles and has quite the collection so far. She wrote on a piece of paper, " 10 blue, 17 red, 12 rainbow, 10 gray/blue, 13 yellow/orange." Which color is the median of her collection?

Accepted Answer

Rainbow

Answer

Red

Answer

Blue

Answer

Yellow/Orange

Question 31

Brittany just started collecting marbles and has quite the collection so far. She wrote on a piece of paper, " 10 blue, 17 red, 12 rainbow, 10 gray/blue, 13 yellow/orange." What percentage of her collection is yellow/orange?

Accepted Answer

21%

Answer

49%

Answer

13%

Answer

24%

7.SP.3 Measure of Center

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