Deck 11: Displaying Distributions With Graphs

Question 1

One of the following 12 scores

Was omitted from the stemplot below:
The missing score is

A) 76
B) 88
C) 92
D) 96
E) 22666.

Answer 1

96

Question 2

Below is a histogram of the ages of the professors at a large university. Approximately what percentage of the professors are 30-39 years old?

A) 20%
B) 45%
C) 55%
D) 65%
E) Not enough information

Answer 2

45%

Question 3

A well-drawn histogram should have

A) bars that are all the same width.
B) no space between bars (unless a class has no observations).
C) a clearly marked vertical scale.
D) All of the above

Answer 3

All of the above

Question 4

You want to make a graph to display the distribution of the salaries of the 1500 professors at a very large university. The best choice is a

A) boxplot.
B) histogram.
C) line graph.
D) pie chart.
E) stemplot.

Question 5

Below is a stemplot of the percent of males, 15 and older, who are illiterate in 139 countries, according to the United Nations. For example, the highest illiteracy rate was 69%, in the African country of Mali.

A) clearly skewed to the right.
B) clearly skewed to the left.
C) roughly symmetric.
D) without a clear shape.

Question 6

Which of the stemplots below correctly displays the following data values?
5)6 8.5 6.3 6.1 5.6 8.5 8.2 8.1 6.7 8.5 5.8 5.1 8.5

A)

B)

C)

D)

Question 7

Ten members of a fraternity take a statistics course. Here are their scores on the first exam in the course:

To present the distribution of scores in a graph, you might choose a

A) line graph.
B) bar graph.
C) pie chart.
D) stemplot.

Question 8

You are giving a talk about the decay of the American family. You want to show by a graph how the number of divorces has increased between 1968 and 2008. What type of graph should you draw?

A) A bar graph
B) A boxplot
C) A histogram
D) A line graph
E) A stemplot

Question 9

To display the percent of likely voters who believe they are going to vote for a particular candidate according to a survey taken each week of an election year, starting in January and ending the last week of October, a good choice of a graph would be a:

A) boxplot.
B) histogram.
C) line graph.
D) pie chart.
E) stemplot.

Question 10

You want to make a graph to display the distribution of the years of experience of the 17 professors in the math department of a large university. The best choice is:

A) boxplot.
B) histogram.
C) line graph.
D) pie chart.
E) stemplot.

Question 11

A stemplot is

A) the same as a boxplot.
B) a part of a small tree.
C) a picture of a distribution.
D) the same as a histogram.
E) useful for describing categorical variables.

Question 12

To display the number of pets owned by each of the 37 students in a class, a good choice of a graph would be a

A) stemplot.
B) bar graph.
C) pie chart.
D) boxplot.
E) line graph.

Question 13

Below is a histogram of the ages of the professors at a large university. The overall shape of this distribution is

A) skewed to the right.
B) skewed to the left.
C) roughly symmetric.
D) without a clear shape.

Question 14

Below is a histogram of the number of repetitions of a chin-up exercise the members of two high school gym classes could do. For reference: the minimum done was two students doing none; the most, two students doing 12. The overall shape of this distribution is

A) roughly symmetric with no outliers.
B) roughly symmetric with one outlier.
C) clearly skewed left.
D) clearly skewed right.

Question 15

Here is a set of data: 1300, 18, 25, 19, -7, 24. Which observation is the outlier?

A) 1300
B) 25
C) 19
D) -7
E) 24

Question 16

You want to make a graph that shows how the cost of attending your school has increased since 1980. A good choice of graph would be a

A) bar graph.
B) histogram.
C) line graph.
D) pie chart.
E) stemplot.

Question 17

An analyst wants to draw a graph that displays the distribution of the tuitions of the 400+ institutions of higher learning in her state. The best type of graph to use is a:

A) bar graph.
B) histogram.
C) line graph.
D) stemplot.

Question 18

Below is a histogram of the ages of the professors at a large university. There are 800 professors at this university. How many of them are in their 70s?

A) 80
B) 10
C) 4
D) 0
E) Not enough information

Question 19

You are writing an article for the college newspaper about the cost of attending college. You want to make a graph to compare costs at your school and three similar schools. A good choice of a graph would be a

A) bar graph.
B) histogram.
C) line graph.
D) pie chart.
E) stemplot.

Question 20

Below is a stemplot of the scores on a recent statistics test. (Key: 8|2 = 82%) The overall shape of this distribution is

A) clearly skewed to the right.
B) clearly skewed to the left.
C) roughly symmetric.
D) without a clear shape.

Question 21

Below is a histogram of the number of repetitions of a chin-up exercise the members of two high school gym classes could do. For reference: the minimum done was two students doing none; the most, two students doing 12. Approximately how many students did fewer than the 10 repetitions recommended by the presidential fitness guidelines?

A) 3
B) 6
C) 44
D) 50
E) Not enough information

Question 22

Below is a histogram of the number of repetitions of a chin-up exercise the members of two high school gym classes could do. For reference: the minimum done was two students doing none; the most, two students doing 12. Approximately how many students were included in this study?

A) 8
B) 15
C) 34
D) 50
E) Not enough information