Find the Mean 70 , 30 , 50 , 30 , 20

$70$ ,

$30$ ,

$50$ ,

$30$ ,

$20$

Step 1

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

$\frac{70 + 30 + 50 + 30 + 20}{5}$

Step 2

Cancel the common factor of

$70 + 30 + 50 + 30 + 20$ and

$5$ .

Factor

$5$ out of

$70$ .

$\frac{5 \cdot 14 + 30 + 50 + 30 + 20}{5}$

Factor

$5$ out of

$30$ .

$\frac{5 \cdot 14 + 5 \cdot 6 + 50 + 30 + 20}{5}$

Factor

$5$ out of

$5 \cdot 14 + 5 \cdot 6$ .

$\frac{5 \cdot (14 + 6) + 50 + 30 + 20}{5}$

Factor

$5$ out of

$50$ .

$\frac{5 \cdot (14 + 6) + 5 \cdot 10 + 30 + 20}{5}$

Factor

$5$ out of

$5 \cdot (14 + 6) + 5 (10)$ .

$\frac{5 \cdot (14 + 6 + 10) + 30 + 20}{5}$

Factor

$5$ out of

$30$ .

$\frac{5 \cdot (14 + 6 + 10) + 5 \cdot 6 + 20}{5}$

Factor

$5$ out of

$5 \cdot (14 + 6 + 10) + 5 (6)$ .

$\frac{5 \cdot (14 + 6 + 10 + 6) + 20}{5}$

Factor

$5$ out of

$20$ .

$\frac{5 \cdot (14 + 6 + 10 + 6) + 5 \cdot 4}{5}$

Factor

$5$ out of

$5 \cdot (14 + 6 + 10 + 6) + 5 (4)$ .

$\frac{5 \cdot (14 + 6 + 10 + 6 + 4)}{5}$

Cancel the common factors.

Factor

$5$ out of

$5$ .

$\frac{5 \cdot (14 + 6 + 10 + 6 + 4)}{5 (1)}$

Cancel the common factor.

$\frac{5 \cdot (14 + 6 + 10 + 6 + 4)}{5 \cdot 1}$

Rewrite the expression.

$\frac{14 + 6 + 10 + 6 + 4}{1}$

Divide

$14 + 6 + 10 + 6 + 4$ by

$1$ .

$14 + 6 + 10 + 6 + 4$

Step 3

Simplify by adding numbers.

Add

$14$ and

$6$ .

$20 + 10 + 6 + 4$

Add

$20$ and

$10$ .

$30 + 6 + 4$

Add

$30$ and

$6$ .

$36 + 4$

Add

$36$ and

$4$ .

$40$

Find the Mean 70 , 30 , 50 , 30 , 20

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