Step 1: Find the sum of the numbers in the set...

Step 2: Count how many numbers are in the set..

There are 10 numbers...

Step 3: Divide the total sum by how many numbers...

So,

Step 1: Find the sum of the numbers

Step 2: Count how numbers there are:

There are numbers..

Step 3: Divide Sum by how many numbers

Step 1: Take the sum of all numbers in the set...

Step 2: Count how many elements are in the set...

There are numbers

Step 3: To find the mean, divide the sum by the number of elements..

The mean is

Step 1: Find the sum of the numbers

Step 2: Find how many numbers

There are numbers..

Step 3: Divide the sum by how many numbers they are...This division gives us the mean..

Step 1: Find the sum of all the terms

Step 2: Count how many numbers are in the set

There are numbers.

Step 3: Divide the sum (Step 1) by how many numbers in the set (Step 2)

If the average of and is , then the sum must be .

If we add the sum of we get or .

To find the average of the three terms, we divide and to get .

Step 1: Find the sum of all the numbers.

Step 2: Divide the sum by how many numbers there are. There are 11 numbers.

The mean (average) of all numbers above is .

Step 1: Find the sum of all numbers:

Step 2: Count how many numbers are in the question..

We have numbers.

Step 3: Divide sum by how many numbers

The first ten prime numbers are . Prime numbers have two factors: and the number itself. Then to find mean, we add all the numbers and divide by .

Find the sum of all the numbers in the set:

Count how many numbers are in the set...

There are six numbers...

Divide the sum of the set by how many numbers to find the mean...