What inference can you draw from this survey?

I can infer that most students in this school like hamburgers.

I can infer that most students in this school like pizza.

I can infer that very few students like hamburgers.

I can infer that their favorite is corn dogs.

There are 400 students at Polly's school. She surveyed a random sample of 80 students to find their favorite hobby. 19 said they like to read. 30 said they like to be with friends. 8 said they like to do crafts. 23 said they like to play sports. Polly infers that doing crafts is the least popular hobby at her school. Refer to the data table. Polly surveys two more samples. Do the results from these samples support the inference made from the first sample?

Yes, the survey results support the inference that doing crafts is the least popular hobby at Polly's school.

No, the survey results does not support the inference that doing crafts is the least popular hobby at Polly's school.

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 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 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.

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, participants caught and released more fish on Day 2.

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.

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

Both grades spend an equal amount of time online.

Impossible to determine form the data sets.

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.

What inference is probably true based on the mean and median of the scores below? Blue Team Averages per quarter: 91%, 88%, 87%, 90% Green Team Averages per quarter: 88%, 85%, 82%, 89%

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.

A representative sample of 80 customers in a clothing store was surveyed about how they paid for their purchases. The table shows the responses. Based on the results, which of the following are valid inferences. Select all that apply.

In a group of 40 customers, it is expected that about 10 will pay with cash.

About 0.3, or 30%, of all the store's customers will pay with a credit card.

Tomorrow, 8 out of the first 80 customers will for sure pay with a gift card.

A sample of 100 customers would provide less reliable data.

Inferences From Samples

Quiz

•

Mathematics

•

7th Grade

•

Practice Problem

•

Hard

Anthony Clark

FREE Resource

20 questions

Show all answers

1.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Approximately what percent of the population rides the campus buses?

2.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Approximately what percentage of the sample was dissatisfied with the housing options?

3.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Approximately how many students did not purchase books for their classes?

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Litzy collects data from a random sample of 7th graders. Out of 40 respondents, 7 attend afterschool programs. Of the 200 7th graders attending Litzy's school, how many would be expected to attend afterschool programs?

14 7th graders

28 7th graders

35 7th graders

42 7th graders

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A travel club has 3,000 members. A random sample of 50 of the club members found that 12 people like mountain vacations best. Which statement is NOT supported by the sample data?

Twenty-four percent of those sampled say they like mountain vacations best.

An estimated 720 club members would likely say they enjoy mountain vacations best.

Almost one-quarter of club members would likely say they enjoy mountain vacations best.

More than 2,500 club members would likely say they prefer other vacations over mountain vacations.

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A travel club has 3,000 members. A random sample of 50 of the club members found that 12 people like mountain vacations best. Which statement is NOT supported by the sample data?

Twenty-four percent of those sampled say they like mountain vacations best.

An estimated 720 club members would likely say they enjoy mountain vacations best.

Almost one-quarter of club members would likely say they enjoy mountain vacations best.

More than 2,500 club members would likely say they prefer other vacations over mountain vacations.

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A town has 35,000 registered voters. A random sample of 500 voters finds that 125 are in favor of a new dog park. How many are likely to vote for the dog park?

25

125

2,625

8,750

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Inferences From Samples

20 questions

Approximately what percent of the population rides the campus buses?

Approximately what percentage of the sample was dissatisfied with the housing options?

Approximately how many students did not purchase books for their classes?

Litzy collects data from a random sample of 7th graders. Out of 40 respondents, 7 attend afterschool programs. Of the 200 7th graders attending Litzy's school, how many would be expected to attend afterschool programs?

A travel club has 3,000 members. A random sample of 50 of the club members found that 12 people like mountain vacations best. Which statement is NOT supported by the sample data?

A travel club has 3,000 members. A random sample of 50 of the club members found that 12 people like mountain vacations best. Which statement is NOT supported by the sample data?

A town has 35,000 registered voters. A random sample of 500 voters finds that 125 are in favor of a new dog park. How many are likely to vote for the dog park?

What inference can you draw from this survey?

A random sample of 50 was taken from a shipment of 12,000 light bulbs. There were 2 broken bulbs in the sample. How many broken bulbs would you expect in the entire shipment?

Q1. How many red shirts do you have?

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