Question

What was the mean (average) amount of money Rachel earned buying and selling stock per dayduring that week?A. -$8.41B. $33.67C. $97.17OD. $194.33

Answer 1

A. -$8.41

Step-by-step explanation:

The mean of quantities (for example the 4 quantities a, b, c, and d ) is found by

`(a+b+c+d)/(4)`

This is dividing the sum of the quantities by the number of quantities.

In our case, we use the above to add the total amount Rachel earned over the week by the number of days.

`(160.00+64.8+240.00-105.20-401.65)/(5)`

Note the 5 in the denominator is the number of days.

Simplifying the above gives

`-\$8.41`

Which is our answer!

Hence, the means about Rachel earned is $-8.41, and therefore, choice A is correct.