Question

The table shows the number of minutes Garrett practiced his trombone each week in one month. Week Number of Minutes Practiced 1 190 2 163 3 327 4 205 What is the mean number of minutes Garrett practiced his trombone each week? A. 197.5 B. 177 C. 245 D. 221.25

Answer 1

`\bar X= (\sum_(i=1)^n X_i)/(n)`

The reason is because we assume that each week have the same weight and replacing we got:

`\bar X= (190+163+327+205)/(4)= 221.25`

And the best option would be:

D. 221.25

Explanation:

For this case we have the following data given

Week 1 2 3 4

Minutes 190 163 327 205

For this case we can find the mean with the following formula:

`\bar X= (\sum_(i=1)^n X_i)/(n)`

The reason is because we assume that each week have the same weight and replacing we got:

`\bar X= (190+163+327+205)/(4)= 221.25`

And the best option would be:

D. 221.25