Grade 6 | Unit 8: Data Sets and Distributions | Mid-Unit Assessment (A)

Select all the statistical questions.

• How many nickels does it take to make a dollar?

• In what year was the first penny made in the United States?

• Among all the pennies at a bank, what is the most frequent year the pennies were made?

• Which coin (penny, nickel, dime, or quarter) is used most frequently in transactions at a bank?

• On average, how many pennies do people receive in change when they make a purchase at a store?

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6.SP.A.1

This dot plot shows the number of hours 20 sixth grade students slept on a Saturday night. Select all the true statements about the data used to build the dot plot.

• Six students slept for at least 8 hours.

• The mean amount of sleep was 6.25 hours.

• More than half of the students slept 7 hours or less.

• Only 1% of the students slept more than 8 hours.

• The difference between the most hours of sleep and the least for these students was 2.5 hours.

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6.RP.A.3.c

6.SP.B.4

Students responded to a survey. The survey asked students to report the amount of time they spent doing homework during a week, to the nearest hour. This histogram displays the data. Which of these statements must be true?

• A total of 4 students participated in the survey.

• Every student spent at least 1 hour doing homework.

• Every student spent less than 20 hours doing homework.

• More students spent 7 hours doing homework than spent 12 hours.

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6.SP.B.4

6.SP.B.5.a

Here is the height of 20 flowers in the school garden, in centimeters: 5, 5, 10, 10, 15, 25, 25, 25, 25, 30, 30, 35, 45, 45, 50, 55, 65, 70, 105, 110. Draw a histogram to display the data. Based on the histogram, what is a typical length for these 20 flowers?

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6.SP.A.3

6.SP.B.4

The mean of four numbers is 25. Three of the four numbers are 20, 26, and 26. What is the fourth number?

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6.SP.B.5.c

Draw two dot plots, each with 7 or fewer data points, so that both dot plots display data with approximately the same mean. The data displayed in Dot Plot A has a much larger MAD (mean absolute deviation) than the data displayed in Dot Plot B. How can you tell, visually, that one dot plot displays data with a larger MAD than another?

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6.SP.B.4

6.SP.B.5.c

Here are two dot plots, the ages of the five children in each of two families. For each family, identify anyone whose age is unusual compared to the rest of the family. Calculate the MAD (mean absolute deviation) of each data set. Which family has the wider spread of ages?

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6.SP.A.3

6.SP.B.5.c