Find the Mean 70 , 68 , 72 , 66 , 68 , 69 , 66 , 71 , 74 , 66

$70$ ,

$68$ ,

$72$ ,

$66$ ,

$68$ ,

$69$ ,

$66$ ,

$71$ ,

$74$ ,

$66$

Step 1

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

$\frac{70 + 68 + 72 + 66 + 68 + 69 + 66 + 71 + 74 + 66}{10}$

Step 2

Simplify the numerator.

Add

$70$ and

$68$ .

$\frac{138 + 72 + 66 + 68 + 69 + 66 + 71 + 74 + 66}{10}$

Add

$138$ and

$72$ .

$\frac{210 + 66 + 68 + 69 + 66 + 71 + 74 + 66}{10}$

Add

$210$ and

$66$ .

$\frac{276 + 68 + 69 + 66 + 71 + 74 + 66}{10}$

Add

$276$ and

$68$ .

$\frac{344 + 69 + 66 + 71 + 74 + 66}{10}$

Add

$344$ and

$69$ .

$\frac{413 + 66 + 71 + 74 + 66}{10}$

Add

$413$ and

$66$ .

$\frac{479 + 71 + 74 + 66}{10}$

Add

$479$ and

$71$ .

$\frac{550 + 74 + 66}{10}$

Add

$550$ and

$74$ .

$\frac{624 + 66}{10}$

Add

$624$ and

$66$ .

$\frac{690}{10}$

Step 3

Divide

$690$ by

$10$ .

$69$

Find the Mean 70 , 68 , 72 , 66 , 68 , 69 , 66 , 71 , 74 , 66

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