IM Gr.6 Unit 8 MID Unit Assessment

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 the 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 the store?

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.

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.

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

• 28

• 45

• 19

• 18

The larger the MAD, the ​ (a)  

• more widespread the data
• more compact the data

Here are two dot plots showing the ages of five children in each of two families.

For family 2, which age is unusual, if any, compared to the rest of the family.

• 5

• 14

• 16

• 15

• no age is unusual

Which families data is more widespread?

• Family 1

• Family 2