Lesson 7.1 UPDATED

Poll

How are you feeling today?

Multiple Choice

During track practice, Fredrick turns in times of 13, 12, 13, 11 and 14 seconds in the 100-meter dash. Three weeks later, he turns in times of 12, 11, 12, 11 and 11 seconds. Compare the two sets of times. What is the difference of the mean between the two sets of times? State your conclusion.

• 12.6 seconds

• 11.4 seconds

• 1.2 seconds

• 2.1 seconds

Multiple Choice

Find the mean absolute deviation of the data:

2, 4, 6, 8, 3, 7, 4, 2, 8, 2

• 2.12

• 4.6

• 21.2

• 2.6

Multiple Choice

Find the mean absolute deviation of the set of data below:

1, 1, 2, 3, 3, 4, 4, 5, 6, 6, 6, 7, 7, 8, 8, and 9

• 5

• 2.125

• 1.25

• 2.25