Making Statistics Inferences

Making Statistics Inferences

7th Grade

10 Qs

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Making Statistics Inferences

Making Statistics Inferences

Assessment

Quiz

Mathematics

7th Grade

Practice Problem

Hard

Created by

Anthony Clark

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10 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The dot plots show how long it took students in Mr. Chauncey's two science classes to finish their science homework last night. Find the means to make an inference about the data.

The 1st period mean is 35. The 2nd period mean is 38.75. On average, it took students in the 1st period class slightly longer to finish their homework than it did the students in the 2nd period class.

The 1st period mean is 38.75. The 2nd period mean is 35. On average, it took students in the 1st period class slightly longer to finish their homework than it did the students in the 2nd period class.

The 1st period mean is 35. The 2nd period mean is 38.75. On average, it took students in the 2nd period class slightly longer to finish their homework than it did the students in the 1st period class.

The 1st period mean is 38.75. The 2nd period mean is 35. On average, it took students in the 2nd period class slightly longer to finish their homework than it did the students in the 1st period class.

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The dot plot shows a random sample of the number of fish caught and released by 30 participants during a two-day fishing tournament. Select the inference that can be made based on the data collected.

On average, most participants caught and released 5 or more fish.

More participants caught 6 fish than any other number.

The same participants who caught and released 1 fish the first day caught and released 1 fish on the second day.

On average, participants caught and released more fish on Day 2.

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What inference is probably true based on the mean and median of the scores below?

The Blue team had slightly higher grades, on average.

The Green team had slightly higher grades, on average.

The Blue and Green teams had the exact same scores, on average.

The Blue team’s scores were twice as great as the Green team’s scores.

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Brazil asks 7 classmates how many erasers and pens they carry in their bags. The mean number of erasers is 10. The mean number of pens is 4. What inference could Brazil make using this data?

Most of Brazil's classmates carry more pens than erasers in their bags.

All of Brazil's classmates carry more erasers than pens in their bags.

Most of Brazil's classmates carry more erasers than pens in their bags.

Most of Brazil's classmates carry similar amounts of erasers and pens in their bags.

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

If you compare the medians of each data set, who spends more time online?

Seventh graders

Eight graders

Both grades spend an equal amount of time online.

Impossible to determine form the data sets.

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Which data set shows students who tend to spend more time on homework per week?

Finn's Data Set

Jonah's Data Set

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Mykel surveyed 15 7th graders and 15 8th graders at his school to see how many hours they spend per day listening to music. He made two box plots to compare the data sets. What inference can he draw from the data sets?

The range is greater for the 8th graders, so there is greater variability for the 8th graders than the 7th graders.

The person who listens to music the least is a 7th grader.

The median is greater for the 7th graders, so they generally spend more time listening to music than 8th graders.

No inferences can be made from the box plots.

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