Mean
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Intros
Examples
Lessons
- Calculate the mean of each set of data. Round your answer to the nearest tenth.
- A survey collected information about the total amount of time teens spent on computers each week. Only data from four cities is listed below.
Cities
Computer time (hours per week)
A
15.3
B
17.5
C
12.4
D
13.9
- Harry was given the following marks on his English essays:
69%, 71%, 85%, 80%, 93%, 99%- Calculate his mean mark? Round your answer to the nearest whole percent.
- What mark would he need to receive on the next essay to increase his mean by 2 percent for the seven essays?
- Harry's friend, Thomas, received the following marks on his English essays:
96%, 74%, 75%, 66%, 96%, 90%
What is Thomas's mean mark? Round your answer to the nearest whole percent. - Who has a smaller mean absolute deviation? Harry or Thomas? What does this tell you?