Describing Data Answers

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1
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experiment✔ observational studypublished datasurvey

A
experiment
B
observational study
C
published data
D
survey
2
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observational study✔ published datasimulationsurvey

A
observational study
B
published data
C
simulation
D
survey
3

experimentobservational study✔ simulationsurvey

A
experiment
B
observational study
C
simulation
D
survey
4

Which surveys illustrate an example of qualitative data? Check all that apply.

A
the time, in minutes, it took students to finish their exams
B
the eye color of students involved in after-school activities
C
the characteristics of different types of birds
D
the scores on the last exam
E
the weights of different books
5

A math teacher wants to find out the average number of hours his students spend working on their math homework for his class each week. Which group would best represent a sample of the population?

A
the first 30 students who enter the school building one morning
B
30 students selected from the lunchroom
C
30 students selected from his class rosters
D
30 students who stay after school for football practice
6

Maria wants to take a survey to predict who will win the election for her town’s mayor. Which samples are most likely to be biased? Check all that apply.

A
the residents of every other house on her street
B
the subscribers to a golf magazine
C
the people at the computer store at the mall
D
every 100th person from the town’s phone registry
E
every 10th person who walks down the main street in her town
7

Which statement is true about Anja’s claim?

A
She is incorrect; the histogram is skewed to the left because more data is on the left side.
B
She is incorrect; the histogram is skewed to the left because there is more data on the right side.
C
She is incorrect; the histogram is symmetrical because the right side is equal to the left side.
D
She is correct; the histogram is skewed to the right because there is less data on the right side.
8

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9

Which statement is true about the box plot?

A
The youngest age is 7.
B
It is skewed right.
C
More of the children were close to 12 years old than 6 years old.
D
Half of the children were between 6 and 9 years old.
11

Which statements must be true according to the histogram? Check all that apply.

A
The data is qualitative.
B
The data is skewed right.
C
There were 31 people at the party.
D
There were children at the party.
E
The most common age of the attendees was 13 years old.
F
The majority of the people at the party were less than 61 years old.
12

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13

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