Accel6 Unit 8 Lesson 11 Practice Problems

Is 30 pages a good estimate of the mean number of pages that Han read each day?

• Yes, because it is close to the actual mean.

• No, because it is much higher than the actual mean.

• No, because it is much lower than the actual mean.

• Cannot be determined from the information given.

Find the mean number of pages that Han read during the five days. Which of the following is the mean number of pages?

• 18

• 20

• 22

• 24

Han recorded the number of pages that he read each day for five days. The dot plot shows his data. Use the dot plot and the mean to complete the table. number of pages: 25, left or right of mean: left

• distance from mean: 7.6

• distance from mean: 3.2

• distance from mean: 10.1

• distance from mean: 5.0

Han recorded the number of pages that he read each day for five days. The dot plot shows his data. Use the dot plot and the mean to complete the table. number of pages: 28, left or right of mean: left

• distance from mean: 4.6

• distance from mean: 2.1

• distance from mean: 7.3

• distance from mean: 1.8

Han recorded the number of pages that he read each day for five days. The dot plot shows his data. Use the dot plot and the mean to complete the table.

• distance from mean: 0.6

• distance from mean: 1.2

• distance from mean: 2.0

• distance from mean: 0.3

Han recorded the number of pages that he read each day for five days. The dot plot shows his data. Use the dot plot and the mean to complete the table. number of pages: 36,

• distance from mean: 3.4

• distance from mean: 2.1

• distance from mean: 5.0

• distance from mean: 1.7

Calculate the mean absolute deviation (MAD) of the data. What is the value of the MAD?

• 2

• 3

• 4

• 5

Which number of minutes is a typical amount of time for the ten sixth-grade students to travel to school?

• 9

• 4.2

Based on the mean and MAD, travel times between 5 and 13 minutes are common for this group. Do you agree?

• Yes, because most data falls within one MAD of the mean.

• No, because most data falls outside this range.

• Yes, because the mean and MAD are not relevant.

• No, because the mean and MAD are always equal.

A different group of ten sixth-grade students also recorded their travel times to school. Their mean travel time was also 9 minutes, but the MAD was about 7 minutes. Which of the following dot plots could represent this data set?

• All dots are clustered around 9 minutes.

• Dots are spread out, with some near 0 minutes and some near 18 minutes.

• All dots are at exactly 9 minutes.

• Dots are spread out, but all are between 7 and 11 minutes.