Bertha randomly surveyed students in two classes about the number of hours they read per week. Which inference can be made?

Seventy-five percent of the language class plays video games for 3 or more hours.

Both box plots are symmetrical.

The difference in the medians is 2.

The interquartile range for history class is 2 and the interquartile range for language class is 4.

The state highway patrol inspected vehicles on two highways. The double dot plot shows the numbers of vehicle violations that they found. Which inference can be made about the two populations?

The median for Route 9 is 1 and the median for interstate 45 is 2.

The shapes of both plots are symmetrical.

The data spreads of both populations are the same.

The interquartile range for Route 9 is 0.5 and the interquartile range for Interstate 45 is 2

Use the box-and-whisker plots to determine which statement is not true.

The interquartile range of the men’s ages is greater than the interquartile range of the women’s ages.

The youngest member of the club is a woman.

The median of the men’s ages is greater than the median of the women’s ages.

The range of the men’s ages is greater than the range of the women’s ages.

Use the box-and-whisker plots to determine which statement is not true.

The interquartile range of the men’s ages is greater than the interquartile range of the women’s ages.

The youngest member of the club is a woman.

The median of the men’s ages is greater than the median of the women’s ages.

The range of the men’s ages is greater than the range of the women’s ages.

A student surveys mathematics teachers to get their opinion on teaching. What is the sample?

All mathematics teachers in the school.

All teachers within the school.

All teachers except mathematics teachers.

Describe the shape of the data in the dot plot below.

Not symmetric data pushed right

I survey a senior citizen center to gain information about the population of NE Oklahoma. Which of the following best describes my population sample?

Biased, sample is not randomly taken or representative of population.

Biased, sample is randomly taken or representative of population.

Representative, sample is randomly taken & representative of population.

Representative, sample is not randomly taken or biased in terms the of population.

I want to study the population of Joplin, so I randomly survey 100 students from Joplin. What can be said about my sample?

Not representative of the population.

Representative of the population.

Zara wants to know how teachers in the local school district feel about extending the school day to 30 minutes longer. Which method will produce a representative sample and therefore provide valid inference?

Survey a random sample of 30 teachers within the school district.

Survey all the teachers who have publicly protested or supported the proposal.

Survey the first 30 teachers who arrive at Zara's school in the morning.

Survey a random sample of 30 teachers and parents of kids within the district.

Edwardo is conducting a survey at his middle school to find out which sport students most enjoy playing. Which method will produce a sample that gives the most objective idea of students' overall favorite sport?

Survey every 4th student entering the school building Tuesday morning.

Survey every 3rd student leaving football practice.

Survey 30 students at the basketball game Wednesday night.

Comparing Center and Spread of Two Sets of Data

Quiz

•

Mathematics

•

7th Grade

•

Practice Problem

•

Hard

•

CCSS

7.RP.A.3, 6.RP.A.3C, RL.11-12.6

Standards-aligned

Barbara White

FREE Resource

31 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the difference between the medians for the two data sets?

0 tickets

2 tickets

4 tickets

6 tickets

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which data set shows a greater spread?

Chess Club

Checkers Club

They have the same spread.

You cannot tell from the box plots.

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Compare the centers and spreads.

Math has a higher median (center) and a wider spread.

Math has a higher median (center) and a smaller spread.

Math has a lower median (center) and a smaller spread.

Math has a lower median (center) and a wider spread.

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

The dot plots compare the number of raffle tickets sold by boys and girls during a school fund-raiser. Which plot has an outlier?

Girls

Boys

Both Plots

Neither

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

The dot plots compare the number of raffle tickets sold by boys and girls during a school fund-raiser. Which is skewed left?

girls

boys

neither

both

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What is the difference in the interquartile ranges?

1

2

4

5

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

50% of the Cruisers attended between 7 and 16 car shows. True or False?

True

False

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Comparing Center and Spread of Two Sets of Data

31 questions

What is the difference between the medians for the two data sets?

Which data set shows a greater spread?

Compare the centers and spreads.

The dot plots compare the number of raffle tickets sold by boys and girls during a school fund-raiser. Which plot has an outlier?

The dot plots compare the number of raffle tickets sold by boys and girls during a school fund-raiser. Which is skewed left?

What is the difference in the interquartile ranges?

50% of the Cruisers attended between 7 and 16 car shows. True or False?

What is the MEDIAN of this data

What is the difference between the medians for the two data sets?

The dot plots compare the number of raffle tickets sold by boys and girls during a school fund-raiser. Which plot has an outlier?

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