AnswersConcepts in Probability and StatisticsData Distributions

Practice Test Answers

19 verified answers
1
Free Preview

What is the spread of the data in the dot plot?

A
from 10 to 15
B
from 0 to 6
C
from 12 to 15
D
from 0 to 5
2
Free Preview

When comparing the shape of the two sets of data, what conclusion can someone draw?

A
The students tend to have fewer siblings than the teachers.
B
The teachers tend to have fewer siblings than the students.
C
Both sets of data have the same shape.
D
Both the students and the teachers have a wide range of siblings.
3

Nora wants to find her average grade in her science class. She has earned a score of 85 percent on two tests, 92 percent on three tests, and 94 percent on her most recent test. What is Nora’s mean, or average, test score?

A
90 percent
B
90 point 3 percent
C
91 percent
D
89 point 2 percent
4

Ten people reported the number of hours they worked last week. 17, 42, 40, 35, 24, 20, 30, 32, 25, 38 What is the median, lower quartile, upper quartile, and interquartile range of this set of data?

A
median: 22 lower quartile: 40 upper quartile: 32 interquartile range: 8
B
median: 31 lower quartile: 24 upper quartile: 38 interquartile range: 7
C
median: 32 lower quartile: 24 upper quartile: 38 interquartile range: 14
D
median: 31 lower quartile: 24 upper quartile: 38 interquartile range: 14
5

The distance in miles a car travels over time in minutes is shown in the table. Distance (miles) Time (minutes) 10 15 20 30 30 45 40 60 Kwame is not sure whether to use a line graph or a line plot to display the data. Which best explains which graph is a better representation of the data?

A
The line plot because numbers can be plotted on a number line.
B
The line graph because it shows how the number of miles increases over the number of minutes.
C
The line plot because there are only a few data points.
D
The line graph because the numbers in the data table are equally spaced.
6

What is the median of this set of data? 100, 102, 103, 106, 109

A
106
B
109
C
103
D
100
7

Two students were asked if they liked to read. Is this a good example of a statistical question? Why or why not?

A
No, this is not a good statistical question because there are a variety of answers that could be given.
B
Yes, this is a good statistical question because a variety of answers are given.
C
No, this is not a good statistical question because there are not a variety of answers that could be given.
D
Yes, this is a good statistical question because there are not a variety of answers that could be given.
8

Sydney’s teacher says she may have her report card percentage based on either the mean or the median and she can drop one test score if she chooses. 94 percent , 84 percent , 100 percent , 68 percent Which measure of center should Sydney choose so she can have the highest percentage possible?

A
Sydney should choose the median after dropping one test score.
B
Sydney should choose the mean without dropping one test score.
C
Sydney should choose the mean after dropping one test score.
D
Sydney should choose the median without dropping one test score.
9

Which dot plot is symmetric?

A
Number of Correct Answers on the Quiz Image with description A dot plot is titled Number of Correct Answers on the Quiz. The number line goes from zero to 5 by ones. There is one dot above zero. There are three dots above 1. There are four dots above 2. There are seven dots above 3. There are eight dots above 4. There are five dots above 5.
B
Number of Correct Answers on the Quiz Image with description A dot plot is titled Number of Correct Answers on the Quiz. The number line goes from zero to 5 by ones. There are eight dots above zero. There are seven dots above 1. There are six dots above 2. There are five dots above 3. There are four dots above 4. There are three dots above 5.
C
Number of Correct Answers on the Quiz Image with description A dot plot is titled Number of Correct Answers on the Quiz. The number line goes from zero to 5 by ones. There are two dots above zero. There are four dots above 1. There are eight dots above 2. There are eight dots above 3. There are two dots above 4. There are four dots above 5.
D
Number of Correct Answers on the Quiz Image with description A dot plot is titled Number of Correct Answers on the Quiz. The number line goes from zero to 5 by ones. There are three dots above zero. There are six dots above 1. There are eight dots above 2. There are eight dots above 3. There are six dots above 4. There are three dots above 5.
10

Between which two values would 75 percent of the data represented on a box plot lie? Choose two correct answers.

A
the lower quartile and the maximum
B
the minimum and the upper quartile
C
the minimum and the maximum
D
the lower quartile and the upper quartile
E
the median and the maximum
F
the median and the upper quartile
11

A set of data has the values 34 , 40 , 42 , 48 , and 70 If the outlier of 70 is removed, what is the mean absolute deviation of the remaining four values?

A
14
B
11 point 2
C
3 point 2
D
4
12

Which is a statistical question that you can ask to learn about your classmates’ favorite movie?

A
How many students own the movie The Lord of the Rings ?
B
How many students like The Lord of the Rings as their favorite movie?
C
What is your favorite movie?
D
What is Mr. Maddox’s favorite movie?
13

Consider the two data sets: Data Set 1: 19, 25, 35, 38, 41, 49, 50, 52, 59 Data Set 2: 19, 25, 35, 38, 41, 49, 50, 52, 99 Which of the following statements is true?

A
The data sets will have different values for their interquartile range.
B
The data sets will have the same values for their interquartile range.
C
An outlier will have no effect on the range.
D
The values are not in order.
14

What is the mean absolute deviation for the set of data? 2, 8, 10, 16

Answer:

4

15

Jacob has golf scores of 120 , 112 , 130 , 128 , and 124 He wants to have an average golf score of 118 What is the first step in determining what Jacob needs to score in his next golf game?

A
Determine the number of points that he needs in his next golf game.
B
Find the average score for the five golf games that Jacob has played.
C
Determine how many total points are needed to have an average of 118 .
D
Find the sum of all the numbers in the problem, 120 plus 112 plus 130 plus 128 plus 124 plus 118 .
16

A data set has a median of 12, an upper quartile of 15, a lower quartile of 10, a minimum of 4, and a maximum of 20. Which statement is true of the box plot of this data set?

A
The left whisker will go from 4 to 15.
B
The box will go from 10 to 12.
C
The right whisker will go from 12 to 20.
D
A line dividing the box will be at 12.
18

The height of the bars in the histogram represents

A
the number of weeks Maria jogged.
B
the number of days Maria jogged that week.
C
the number of marathons Maria entered.
D
the number of runs Maria jogged in each range of miles.
19

The line plot shows the number of hours students in Mrs. Timberlake’s class worked on a project. How many students are included in the data? [Blank 1] students

Answer:

15

20

The shapes of which plots, if any, show an outlier?

A
neither Middleton nor Westwood
B
both Middleton and Westwood
C
Middleton only
D
Westwood only

Did you find these answers helpful?

More from this Course

practice test
12 verified answers

Practice Test

Quiz
24 verified answers

Test

Quiz
24 verified answers

Test