Statistics Examples

12

$12$ ,

15

$15$ ,

45

$45$ ,

65

$65$ ,

78

$78$

Step 1

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

\frac{12 + 15 + 45 + 65 + 78}{5}

$\frac{12 + 15 + 45 + 65 + 78}{5}$

Step 2

Simplify the numerator.

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Step 2.1

Add

12

$12$ and

15

$15$ .

\frac{27 + 45 + 65 + 78}{5}

$\frac{27 + 45 + 65 + 78}{5}$

Step 2.2

Add

27

$27$ and

45

$45$ .

\frac{72 + 65 + 78}{5}

$\frac{72 + 65 + 78}{5}$

Step 2.3

Add

72

$72$ and

65

$65$ .

\frac{137 + 78}{5}

$\frac{137 + 78}{5}$

Step 2.4

Add

137

$137$ and

78

$78$ .

\frac{215}{5}

$\frac{215}{5}$

\frac{215}{5}

$\frac{215}{5}$

Step 3

Divide

215

$215$ by

5

$5$ .

43

$43$

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