AnswersConcepts in Probability and Statistics AUnit Test

Plotting Data on a Dot Plot Answers

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Which is an example of a statistical question?QuestionsQuestion 1How old am I?Question 2How old is the teacher?Question 3How old will I be after my next birthday?Question 4How old are the students in math class?

A
question 1
B
question 2
C
question 3
D
question 4
2
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Look at the dot plot to answer the following question.How many more people started babysitting when they were 13 rather than 12?

Question illustration
A
3
B
6
C
12
D
13
3

Which questions are good examples of a statistical question? Check all that apply.

A
How many pets do you have?
B
Do you think a pet is a lot of work?
C
Do you like having a pet?
D
How many times a day do you feed your pet?
E
Do you feed your pet at night?
4

Which is an example of a non-statistical question?QuestionsQuestion 1What did each person in our class have for lunch yesterday? Question 2What did each child in preschool have for lunch yesterday? Question 3What did Maria have for lunch today? Question 4What did each person in our class have for lunch today?

A
question 1
B
question 2
C
question 3
D
question 4
5

Mr. Chiu made a dot plot after asking his students a question.Based on the dot plot, which statements are correct? Check all that apply.

Question illustration
A
Eleven students answered Mr. Chiu’s question.
B
Twelve students answered Mr. Chiu’s question.
C
Three people studied for two hours.
D
Three people studied for three hours.
E
Everyone who responded studied for at least one hour.
F
Four people studied for four or more hours.
6

Use the data on the dot plot to answer the question. How many people slept for less than seven hours?

Question illustration
Answer not available
7

Which dot plot shows three TV’s in two houses?

A
A dot plot titled How many T V's Are in Your House going from 0 to 4. 0 has 1 dot, 1 has 2 dots, 2 has 3 dots, 3 has 2 dots, and 4 has 1 dot.
Option A
B
A dot plot titled How many T V's Are in Your House going from 0 to 4. 0 and 1 dot, 1 has 2 dots, 2 has 2 dots, 3 has 3 dots, and 4 has 1 dot.
Option B
C
A dot plot titled How many T V's Are in Your House going from 0 to 4. 0 has 0 dots, 1 has 3 dots, 2 has 2 dots, 3 has 3 dots, and 4 has 1 dot.
Option C
D
A dot plot titled How many T V's Are in Your House going from 0 to 4. 0 has 1 dot, 1 has 2 dots, 2 has 4 dots, 3 has 3 dots, and 4 has 1 dot.
Option D
8

Petro made a tally chart shown below.Hours Spent Watching TVWhich would be a good statistical question based on the tally chart?

Question illustration
A
Did you watch four hours of TV today?
B
Did you watch TV today?
C
Did you watch five or six hours of TV today?
D
How many hours did you spend watching TV today?
9

Which is an example of a statistical question?QuestionsQuestion 1What percent did Matti score on his English test?Question 2What letter grade did each person score on their English test?Question 3Who scored the best on their English test? Question 4Who scored the worst on their English test?

A
question 1
B
question 2
C
question 3
D
question 4
10

Mikayla asked 10 of her friends how many hours of TV they watch in a week. Three of her friends said 8 hours, two of her friends said 9 hours, two of her friends said 11 hours, one of her friends said 12 hours, and two of her friends said 14 hours. Mikayla wanted to make a dot plot of the data she gathered. In what order would she create the dot plot?

A
Draw a number line from 8 to 14. Show the frequency of each number. Title the dot plot.
B
Show the frequency of each number. Title the dot plot. Draw a number line from 8 to 14.
C
Title the dot plot. Show the frequency of each number. Draw a number line from 8 to 14.
D
Show the frequency of each number. Draw a number line from 8 to 14. Title the dot plot.
11

Sammi wanted to create a dot plot based on this tally chart. In which step, if any, did Sammi make a mistake creating his dot plot?Steps to Create a Dot PlotStep 1Create a number line.Step 2Title the Dot PlotStep 3Plot the Points

Question illustration
A
Sammi made a mistake in Step 1 because his number line did not include all numbers in the data set.
B
Sammi made a mistake in Step 2 because he chose a title without knowing if the table represents the number of hours read per week.
C
Sammi made a mistake in Step 3 because he did not correctly plot each dot above the appropriate place on the number line.
D
Sammi did not make a mistake.
12

Which dot plot shows three people that sleep for eight hours at night and three people that sleep for six hours at night?

A
A dot plot titled How many Hours do you Sleep at Night question mark going from 5 to 9. 5 has 3 dots, 6 has 3 dots, 7 has 3 dots, 8 has 2 dots, and 9 has 3 dots.
Option A
B
A dot plot titled How many Hours do you Sleep at Night question mark going from 5 to 9. 5 has 3 dots, 6 has 2 dots, 7 has 3 dots, 8 has 3 dots, and 9 has 3 dots.
Option B
C
A dot plot titled How many Hours do you Sleep at Night question mark going from 5 to 9. 5 has 2 dots, 6 has 3 dots, 7 has 4 dots, 8 has 4 dots, and 9 has 1 dot.
Option C
D
A dot plot titled How many Hours do you Sleep at Night question mark going from 5 to 9. 5 has 2 dots, 6 has 3 dots, 7 has 4 dots, 8 has 3 dots, and 9 has 1 dot.
Option D
13

Which is an example of a statistical question?QuestionsQuestion 1How many pets does Alisha have at home? Question 2How old were you when you got your first pet?Question 3Do you like having a pet? Question 4What is Alisha’s pet’s name?

A
question 1
B
question 2
C
question 3
D
question 4
14

Use the tally chart to answer the question. Which number line would be needed to create a dot plot for the data above?

Question illustration
A
a number line from 0 to 5
B
a number line from 1 to 5
C
a number line from 1 to 7
D
a number line from 0 to 7
15

Which is an example of a non-statistical question?QuestionsQuestion 1Is Because of Winn-Dixie your favorite book? Question 2How many books has each student read in the last month?Question 3How many books does each student own? Question 4How many books did you read over the summer?

A
question 1
B
question 2
C
question 3
D
question 4
16

What are dot plots best used for?

A
Dot plots are best used to show a distribution of data.
B
Dot plots are best used to show answers to a non-statistical question.
C
Dot plots are best used to help you ask questions.
D
Dot plots are best used to help you tally data.
17

Which dot plot matches the tally chart below?

Question illustration
A
A dot plot titled Pull-ups completed in one minute goes from 0 to 6. 0 has 0 dots, 1 has 2 dots, 2 has 5 dots, 3 has 3 dots, 4 has 1 dot, 5 has 2 dots, and 6 has 0 dots.
Option A
B
A dot plot titled Pull-ups completed in one minute goes from 0 to 6. 0 has 0 dots, 1 has 2 dots, 2 has 2 dots, 3 has 3 dots, 4 has 1 dot, 5 has 2 dots, and 6 has 0 dots.
Option B
C
A dot plot titled Pull-ups completed in one minute goes from 0 to 5. 0 has 0 dots, 1 has 2 dots, 2 has 5 dots, 3 has 3 dots, 4 has 1 dot, 5 has 0 dots.
Option C
D
A dot plot titled Pull-ups completed in one minute goes from 0 to 6. 0 has 0 dots, 1 has 2 dots, 2 has 5 dots, 3 has 3 dots, 4 has 1 dot, 5 has 1 dot, and 6 has 0 dots.
Option D

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