Question

What is the mean of the following set of data? {1,4,7,5,3,3,5}

A. 4.0
B. 4.5
C. 3.5
D. 4.2

Answer 1

The answer is A. 4.0

Explanation:

You add up the numbers to get 28 and divide it by 7 (the total number of numbers provided in the set).

Answer 2

A. 4.0

Explanation:

Finding the mean is also commonly referred to as the "average".

Add up all of the numbers in the data set, then divide by how many numbers you began with.

Add up the numbers in {1,4,7,5,3,3,5} to get the sum.

1 + 4 + 7 + 5 + 3 + 3 + 5 = 28

Count how many numbers you began with. There were 7 numbers.

Divide sum by the amount of numbers.

28 ÷ 7 = 4

Therefore, the mean of the data set is 4.