Math Statistics

What conclusion can you draw about how much time seventh and eighth graders spend reading each week?

• All seventh graders read more than eighth graders.

• On average, seventh graders read more than eighth graders.

• The people who read the most are all in eighth grade.

• There is not enough information in a box plot to draw any conclusions.

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7.SP.3

Which group runs more kilometers per week, in general?

• soccer players

• basketball players

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7.SP.3

Which data set shows more variation?

• soccer players

• basketball players

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7.SP.3

Carter's data comparing the growth of plants using fertilizer or not using fertilizer is shown in the box plots. Use the measures of center from the box plots to make an inference about the data.

• The plants that received fertilizer have a higher median, so they grew better overall.

• The plants that did not receive fertilizer had a larger interquartile range, so they grew better overall.

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7.SP.3

Which inference can you make by comparing the measures of center?

• Every swimmer swam faster last year than they did this year.

• Most swimmers swam faster last year, on average, than they did this year.

• The swimmers swam faster this year, on average, than they did last year.

• Every swimmer swam faster this year than they did last year.

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7.SP.4

You are wanting to do a study on middle school math in Kansas. You sample students in Sedgwick, Johnson and Cherokee counties. Is your sample representative of the population?

• Yes

• NO

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7.SP.4

Mrs. Niles is doing a study about middle school mathematics at Galena Middle School. Find a sample representative of the population.

• people at Casey's

• 7th grade students in Mr. Van's class

• Liberty students

• citizens of Galena

The dot plot shows a random sample of the number of deer observed by 25 participants during a two-day hike. Which day showed more variability?

• Day 1

• Day 2

Tags

7.SP.3

Gio surveys 40 Quick Trip employees. He reports that 5 out of 15 fast-food employees are satisfied with their hourly pay rate. What percentage of employees are happy with their pay rate?

• 40%

• 33%

• 12.5%

• 38%

A recent survey of 800 seventh graders from across the state shows 4 out of 10 like to play paper football. How many students said they like to play paper football?

• 40 students

• 200 students 

• 320 students

• 8,000 students

Tags

CCSS.7.RP.A.3