Question

Emma's final grade in her math class is the average (mean) of her 5 chapter tests she took throughout the year. If she received a 92%, 85%, 78%, 97%, and 88% on the five tests, what is her final grade?​

Answer 1

Answer:

Step-by-step explanation:

The mean (or average) of a set of numbers can be found with the following formula:

$Mean = \frac{A_{1} + A_{2} + ... + A_{N}}{N}$

For this problem, we have five numbers, so we add them together and divide by 5:

$Mean = \frac{92 + 85 + 78 + 97 + 88}{5}$

$Mean = \frac{440}{5}$

$Mean = 88$

Answer 2

Answer:

88%

Step-by-step explanation:

Emma took tests of her 5 chapters throughout the year.

She received  the score on the five tests

92%, 85%, 78%, 97% and 88%

We have to calculate the average (mean) of her final grade.

average =  $\frac{\text{addition of all grades}}{\text{total number of tests}}$

=  $\frac{92+85+78+97+88}{5}$

=  $\frac{440}{5}$

= 88%

Her final grade would be 88%.