Question

what is the mean for this data set? {10, 10, 11, 12, 13, 14, 20, 20}

Answer 1

Answer: 13.75

Put the numbers in order

10, 10, 11, 12, 13, 14, 20, 20

Add

10+10+11+12+13+14+20+20=110

Divide

110÷8=13.75

Answer 2

Answer:

13.75

Step-by-step explanation:

The mean of a data set is the sum of all the numbers divided by the number of items.

$\frac{Sum of the terms}{Number of terms}$ = mean

$\frac{10+10+11+12+13+14+20+20}{8}=\frac{110}{8} =13.75$