Question

Twelve secretaries were given a typing test, and the times (in minutes) to completed it were as follows: 8, 12, 15, 9, 6, 8, 10, 9, 8, 6, 7, 8 find the mean. round to one decimal place (example: 3.2)

Answer 1

Answer:

8.8 minutes

Step-by-step explanation:

we know that

The mean is the average of the numbers.

To find out the mean, add up all the numbers, then divide by how many numbers there are.

we have

$[8, 12, 15, 9, 6, 8, 10, 9, 8, 6, 7, 8]$

There are twelve numbers

so

The mean is equal to

$[8+12+15+9+6+8+10+9+8+6+7+8]/12=106/12=8.8\ min$