Basic Math Examples

$75$ , $77$ , $63$ , $65$ , $68$ , $61$ , $79$ , $68$ , $67$ , $62$ , $67$ , $72$ , $74$ , $83$ , $69$

Step 1

The mean of a set of numbers is the sum divided by the number of terms.

$\frac{75 + 77 + 63 + 65 + 68 + 61 + 79 + 68 + 67 + 62 + 67 + 72 + 74 + 83 + 69}{15}$

Step 2

Simplify the numerator.

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Step 2.1

Add $75$ and $77$ .

$\frac{152 + 63 + 65 + 68 + 61 + 79 + 68 + 67 + 62 + 67 + 72 + 74 + 83 + 69}{15}$

Step 2.2

Add $152$ and $63$ .

$\frac{215 + 65 + 68 + 61 + 79 + 68 + 67 + 62 + 67 + 72 + 74 + 83 + 69}{15}$

Step 2.3

Add $215$ and $65$ .

$\frac{280 + 68 + 61 + 79 + 68 + 67 + 62 + 67 + 72 + 74 + 83 + 69}{15}$

Step 2.4

Add $280$ and $68$ .

$\frac{348 + 61 + 79 + 68 + 67 + 62 + 67 + 72 + 74 + 83 + 69}{15}$

Step 2.5

Add $348$ and $61$ .

$\frac{409 + 79 + 68 + 67 + 62 + 67 + 72 + 74 + 83 + 69}{15}$

Step 2.6

Add $409$ and $79$ .

$\frac{488 + 68 + 67 + 62 + 67 + 72 + 74 + 83 + 69}{15}$

Step 2.7

Add $488$ and $68$ .

$\frac{556 + 67 + 62 + 67 + 72 + 74 + 83 + 69}{15}$

Step 2.8

Add $556$ and $67$ .

$\frac{623 + 62 + 67 + 72 + 74 + 83 + 69}{15}$

Step 2.9

Add $623$ and $62$ .

$\frac{685 + 67 + 72 + 74 + 83 + 69}{15}$

Step 2.10

Add $685$ and $67$ .

$\frac{752 + 72 + 74 + 83 + 69}{15}$

Step 2.11

Add $752$ and $72$ .

$\frac{824 + 74 + 83 + 69}{15}$

Step 2.12

Add $824$ and $74$ .

$\frac{898 + 83 + 69}{15}$

Step 2.13

Add $898$ and $83$ .

$\frac{981 + 69}{15}$

Step 2.14

Add $981$ and $69$ .

$\frac{1050}{15}$

Step 3

Divide $1050$ by $15$ .

$70$