Answer:
79.7
Step-by-step explanation:
To find the mean of a set of numbers, add them all together, then divide that number by the total amount of numbers you had.
Add all the numbers together:
70 + 72 + 68 + 67+ 71 + 98 + 100 + 92 + 71 + 88
= 797 <= sum of data
How many numbers did we start with? Count them.
There were 10 <= amount of data
Divide the sum of data by the amount of data.
797 ÷ 10 = 79.7 <= mean of data
Therefore the mean is 79.7.
