AnswersConcepts in Probability and Statistics ARange and Interquartile Range

Range and Interquartile Range — Unit test Answers

21 verified answers2 views
1
Free Preview

What is the center of the data?Number of Green Candies in a BagThe center is

Question illustration
Answer not available
2
Free Preview

The dot plot shows how Mr. Ruda’s class scored on a 5-point math quiz. Mr. Ruda described the data as having a spread from 0 to 5, a center of 3, two clusters, and a peak at 5. Where did Mr. Ruda make an error?Scores on the Math Quiz

Question illustration
A
The spread is from 0 to 8.
B
The center is at 2.
C
There is only one cluster.
D
The peak is at 8.
3

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

A
The values are not in order.
B
The data sets will have different values for their interquartile range.
C
The data sets will have the same values for their interquartile range.
D
An outlier will have no effect on the range.
4

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

A
What is your favorite movie?
B
What is Mr. Maddox’s favorite movie?
C
How many students like The Lord of the Rings as their favorite movie?
D
How many students own the movie The Lord of the Rings?
5

Which dot plot is symmetric?

A
Number of Correct Answers on the Quiz
Option A
B
Number of Correct Answers on the Quiz
Option B
C
Number of Correct Answers on the Quiz
Option C
D
Number of Correct Answers on the Quiz
Option D
6

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?

Question illustration
F
Find the sum of all the numbers in the problem, .
Option F
F
Find the average score for the five golf games that Jacob has played.
D
Determine the number of points that he needs in his next golf game.
D
Determine how many total points are needed to have an average of 118.
7

Maria made a histogram to represent her jogging miles.The height of the bars in the histogram represent

Question illustration
A
the number of runs Maria jogged in each range of miles.
B
the number of marathons Maria entered.
C
the number of days Maria jogged that week.
D
the number of weeks Maria jogged.
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%, 84%, 100%, 68%Which measure of center should Sydney choose so she can have the highest percentage possible?

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

Students were asked how many hours they read in a week. Is this a good example of a statistical question? Why or why not?

A
Yes, this is a good statistical question because a variety of answers are given.
B
Yes, this is a good statistical question because there are not a variety of answers that could be given.
C
No, this is not a good statistical question because there are not a variety of answers that could be given.
D
No, this is not a good statistical question because there are a variety of answers that could be given.
10

What is the spread of the data in the dot plot?Number of Apples in Each Bag

Question illustration
A
from 0 to 5
B
from 10 to 15
C
from 12 to 15
D
from 0 to 6
11

Which descriptions of a histogram are true? Check all that apply..

A
A peak is a bar that is lower than the other bars around it.
B
A peak is where the frequency is lowest.
C
A peak is where the frequency is the highest.
D
A cluster is a group of bars, meaning the frequency is higher in these intervals.
E
A peak is a bar that is higher than the other bars around it.
F
Intervals on a histogram where there are no bars mean the frequency is 0.
G
If the graph is symmetrical, the data is clustered toward the right side.
H
If the graph is symmetrical, the data is evenly distributed.
12

The high temperatures in Montana are recorded for a week. High TemperaturesSunday46°FMonday52°FTuesday51°FWednesday54°FThursday49°FFriday51°FSaturday61°FWhat is the mean, or average, high temperature for the week?

Answer not available
13

Use the data on the dot plot to answer the question. How many people read for more than three hours last week?

Question illustration
Answer not available
14

What is the range of this set of data? 111, 97, 63, 84, 100, 119, 72

Answer not available
15

A weekly report for new agents at a vacation sales company is shown in the histogram.How many of the new agents sold more than 10 vacation packages?

Question illustration
Answer not available
16

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

A
median: 31lower quartile: 24upper quartile: 38interquartile range: 14
B
median: 22lower quartile: 40upper quartile: 32interquartile range: 8
C
median: 31lower quartile: 24upper quartile: 38interquartile range: 7
D
median: 32lower quartile: 24upper quartile: 38interquartile range: 14
17

What is the median of this set of data? 71, 37, 22, 81, 65, 54, 52, 41, 48, 71

Answer not available
18

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

A
100
B
103
C
106
D
109
19

Mrs. Barnes recorded the grades her students earned on the last chapter test in the frequency table below.The frequency table will be used to make a histogram. Test ScoreNumber of Students31 - 40141 - 50251 - 60461 - 70671 - 801181 - 90591 - 1004Which chart has the correct setup for Mrs. Barnes’ histogram?

A
A 2-column table with 4 rows titled Mrs. Barnes's Histogram. Column 1 has entries interval used, appropriate scale, vertical axis represents, horizontal axis represents. Column 2 has entries 10, 31 to 100, number of students, test scores.
Option A
B
A 2-column table with 4 rows titled Mrs. Barnes's Histogram. Column 1 has entries interval used, appropriate scale, vertical axis represents, horizontal axis represents. Column 2 has entries 10, 0 to 12, number of students, test scores.
Option B
C
A 2-column table with 4 rows titled Mrs. Barnes's Histogram. Column 1 has entries interval used, appropriate scale, vertical axis represents, horizontal axis represents. Column 2 has entries 7, 0 to 12, test scores, number of students.
Option C
D
A 2-column table with 4 rows titled Mrs. Barnes's Histogram. Column 1 has entries interval used, appropriate scale, vertical axis represents, horizontal axis represents. Column 2 has entries 7, 31 to 100, test scores, number of students.
Option D
20

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

A
89.2%
B
90%
C
90.3%
D
91%

Did you find these answers helpful?

More from this Course

Assignment
23 verified answers

Range and Interquartile Range

Assignment
33 verified answers

Range and Interquartile Range

Instruction
17 verified answers

Instruction