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Find the Mean 70 , 45 , 53 , 80 , 64 , 45 , 43

$70$ ,

$45$ ,

$53$ ,

$80$ ,

$64$ ,

$45$ ,

$43$

Step 1

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

$\frac{70 + 45 + 53 + 80 + 64 + 45 + 43}{7}$

Step 2

Simplify the numerator.

Add

$70$ and

$45$ .

$\frac{115 + 53 + 80 + 64 + 45 + 43}{7}$

Add

$115$ and

$53$ .

$\frac{168 + 80 + 64 + 45 + 43}{7}$

Add

$168$ and

$80$ .

$\frac{248 + 64 + 45 + 43}{7}$

Add

$248$ and

$64$ .

$\frac{312 + 45 + 43}{7}$

Add

$312$ and

$45$ .

$\frac{357 + 43}{7}$

Add

$357$ and

$43$ .

$\frac{400}{7}$

Step 3

Divide.

$57.14285714$

Step 4

The mean should be rounded to one more decimal place than the original data. If the original data were mixed, round to one decimal place more than the least precise.

$57.1$

Find the Mean 70 , 45 , 53 , 80 , 64 , 45 , 43

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