The mean of 8 math quiz scores is 88. If the first seven scores are 85,70,92,85,91,100, and 88, what is the eighth quiz score? Using all eight scores find the median, mode, and range of the quiz scores. Explain your answer.

Answer: 93

93

Step-by-step explanation:

The mean of a list of numbers is the sum of the numbers divided by the count of the numbers in the list.

In this case, representing the eighth score with x, the mean is (611+x) / 8

Solving for the mean:

88 = (611+x) / 8

Multiply both sides by 8

8*88=611+x

704=611+x

704-611=x

x=93