Five test scores are 82, 90, 75, 88 and 95. What is the mean of the…

Step by step

The question

Question: find the mean of 82, 90, 75, 88 and 95.

The mean is the fair share.

We add them all, then share the total equally.

1 Add them all

We add all the numbers, from left to right.

So the total is 430.

2 Count them

Now we count the numbers.

There are 5.

3 Share equally

We share the total equally: 430 divided by 5.

430 divided by 5 is 86.

4 Check

Let's check: if every number were 86, 5 of them would make 86 times 5.

That is 430, the total.

So it is right!

5 Type it in

The answer box takes 5 characters.

86 has 2.

It fits.

We type 86.

Let's look back.

First: add them all.

Then: count them.

Then: share equally.

Then: check.

Last: type it in.