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Ch 9 Statistics - TEST - mod

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Last updated almost 5 years ago
20 questions
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Question 20
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Find the median of the data set below.

3, 8, 10, 1, 25
10
8
9
Over 11 consecutive days, Jim did the following number of pushups:

7, 8, 10, 10, 12, 14, 15, 17, 17, 19, 33

Find the range of the data.
14
15
26
The cost of 10 different portable MP3 players is shown in the table. What is the mean cost?


90
100
80
Use the table of test grades to find the Maximum, Minimum, First Quartile, Third Quartile and Interquartile Range. Note: There are three values in the list of choices that are not used for these Measures of Spread.


Third Quartile
0
Unused
90
Unused
63
Maximum
85
Unused
22
Interquartile Range
68
First Quartile
83
Minimum
74
Which statement about the data represented by the percent bar graph is NOT true?

More 6th grade students are traveling than 7th graders.
40% of 7th grade students will not be traveling over spring break.
Fewer 7th grade students are traveling than 8th grade students.
Use the dot plot to find the mode.

56
55
58
The graph shows the preferences of exercise classes. What is the relative frequency for yoga? Round your answer to the nearest tenth of a percent.


38%
40%
42%
Which set of data has an outlier?
Which statement about the data presented by the box plot is NOT true?


The median is 60.
The range is 26.
The data in the second quartile is less spread out than the data in the third quartile.
The circle graph shows how Tremaine divided his time. Tremaine used the computer a total of 30 hours last week. How many more hours did Tremaine use the computer for social media than for games?


4.5
6.5
2.5
Use the box plot to determine which statement is NOT true?


The youngest member of the club is a woman.
The interquartile range of the men’s ages is greater than the interquartile range of the women’s ages.
The median of the men’s ages is greater than the median of the women’s ages.
The graph shows the favorite colors chosen by some middle school students.



Which statement is supported by the information in the graph?
Fewer than 30% of the students chose red, yellow, or orange as their favorite color.
Exactly 18% of the students chose blue as their favorite color.
Exactly 2/5 of the students chose green, black, or purple as their favorite color.
A survey found that 5 out of 6 people in a community visit a dentist on a regular basis. If there are 4,320 people in the community, what is a reasonable prediction for the number of people who would visit a dentist on a regular basis?
3600
2300
4200
A survey found that 6 out of 8 students own a pet. If there are 320 students is a school, what is a reasonable prediction for the number of students who own a pet?
320
180
240
Mrs. Smith, the school nurse, randomly selects seventh graders to participate in a district survey about the heights and weights of students. They survey results for the heights of seventh-grade boys and girls are shown in the box plots below.

Which statement is best supported by the information in the box plots?
The range of data for the boys’ heights is equal to the range of the data the girls’ heights.
The third quartile of the data for the boys’ heights is less than the third quartile of the data for the girls’ heights.
The median of the data for the boys’ heights is greater than the median of the data for the girls’ heights.
A survey in one middle school showed that 3 out of 5 students enjoy biking on the weekends. Predict how many out of the 485 students in the school would say they enjoy biking on the weekends.
291
342
178
The bar graph shows the number of vacant rooms at a hotel over a five-day span. How many more rooms were vacant on Thursday and Friday than on Monday and Tuesday?


15
21
10
Which statement best describes the shape of the data distribution for the girls’ heights compared to the shape of the data distribution for the boys’ heights?

The distribution for the girls’ heights is skewed left, while the distribution for the boys’ heights is skewed right.
The distribution for the girls’ heights is skewed right, while the distribution for the boys’ heights is skewed left.
The distribution for the girls’ heights is skewed right, while the distribution for the boys’ heights is symmetric.
Which of the following graphs is symmetric?
To determine what apartment renters want, the manager randomly surveyed eight renters in each of the six buildings in the complex. Out of 48 renters, 64% said they would like more hallway lights. How many renters said they would like more hallway lights?
31
29
26