Answer: John’s average test score is 90.
Step-by-step explanation:
To find the average of a set of numbers, we must find the sum of all of the numbers (add them together) and then divide by the amount of numbers in the set. In this case, we begin by finding the sum of the four numbers:
69 + 86 + 100 + 105
= 360
Then, we divide by 4, since there are 4 scores in the data set.
360/4 = 90
Therefore, John’s average test score is 90.
Hope this helps!
