AnswersIntegrated Math II FullData Displays and Statistics

Data Displays and Statistics Answers

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1
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Which dot plot has the greatest number of observations?

A
Option
Option A
B
Option
Option B
C
Option
Option C
2
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Which did you include in your explanation? Check all that apply.

A
The survey was collected in a biased manner.
B
Boys and girls not in dance class did not have a chance to complete the survey.
C
Every student should have had the same opportunity to complete the survey.
3

Alana✔ LorenaZarena

A
Alana
B
✔ Lorena
C
Zarena
4

greatest interquartile range valuegreatest mean running time✔ least interquartile range valueleast mean running time

A
greatest interquartile range value
B
greatest mean running time
C
✔ least interquartile range value
D
least mean running time
5

How many observations were used to create the display?

Answer:

27

6

If no additional information was given, which display type would not show the number of observations?

A
bar graphs
B
box plots
C
dot plots
D
histograms
7

To choose a mascot for a new middle school, 8th-grade students were polled, and their top choice was selected as the mascot. Was the sample a biased sample?

Answer:

yes

8

Which data collections show bias? Check all that apply.

A
Ten numbered tickets were selected from a bowl containing all raffle tickets sold.
B
A bank asked its 25 wealthiest customers to complete a satisfaction survey.
C
Fifth graders were asked what desserts should be served with school lunches.
D
Every tenth semi-trailer was pulled over and weighed at the state border.
E
College students at the honors library were asked who they voted for in the last election.
9

The student council wanted to know students’ opinions about the music at school dances. They asked all the girls in a dance class to fill out a survey. Was the survey collected in a biased manner? Explain how you decided.

Answer:

PENDING

10

Which student’s data would be most representative of the brand’s battery life?

A
Alice
B
Justin
C
Katarina
D
Noah
11

A typical 8- to 12-year-old texts 57✔ 627077 times per day.

Answers:
times per day.:62
a typical 8- to 12-year-old.:more often than
12

The dot plots show the ages of players on two soccer teams. Which statements are true? Check all that apply.

A
The Lions have more variability in the ages of their players.
B
The Eagles have more variability in the ages of their players.
C
The Lions have more players.
D
The Eagles have more players.
E
The mean of the ages of Lions is less than the mean of the ages of Eagles.
13

Question text not available

Answers:
The fastest runner is , because she had the .:least mean running time
The most consistent runner is , because she had the .:Lorena
The most consistent runner is , because she had the .:least interquartile range value
14

Explain why a graphical display might be skewed. How do you ensure data isn’t skewed?

Answer:

PENDING

15

Which did you include in your explanation? Check all that apply.

A
Samples collected with bias can have skewed data plots.
B
If a sample size is too small, the data can be skewed.
C
Collecting a large unbiased sample will ensure the data is representative and not skewed.
16

Question text not available

Answers:
The fastest runner is , because she had the .:least mean running time
The most consistent runner is , because she had the .:Lorena
The most consistent runner is , because she had the .:least interquartile range value
17

A typical 13- to 17-year-old texts ✔ more often thanless often thanthe same amount as a typical 8- to 12-year-old.

A
✔ more often than
B
less often than
C
the same amount as
18

greatest interquartile range valuegreatest mean running timeleast interquartile range value✔ least mean running time

A
greatest interquartile range value
B
greatest mean running time
C
least interquartile range value
D
✔ least mean running time

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