Find the Mean 1.5 , 4.7 , 6 , 7.7 , 7.7 , 4.5 , 2.5 , 4.5

$1.5$ ,

$4.7$ ,

$6$ ,

$7.7$ ,

$4.5$ ,

$2.5$ ,

$4.5$

Step 1

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

$\frac{1.5 + 4.7 + 6 + 7.7 + 7.7 + 4.5 + 2.5 + 4.5}{8}$

Step 2

Simplify the numerator.

Add

$1.5$ and

$4.7$ .

$\frac{6.2 + 6 + 7.7 + 7.7 + 4.5 + 2.5 + 4.5}{8}$

Add

$6.2$ and

$6$ .

$\frac{12.2 + 7.7 + 7.7 + 4.5 + 2.5 + 4.5}{8}$

Add

$12.2$ and

$7.7$ .

$\frac{19.9 + 7.7 + 4.5 + 2.5 + 4.5}{8}$

Add

$19.9$ and

$7.7$ .

$\frac{27.6 + 4.5 + 2.5 + 4.5}{8}$

Add

$27.6$ and

$4.5$ .

$\frac{32.1 + 2.5 + 4.5}{8}$

Add

$32.1$ and

$2.5$ .

$\frac{34.6 + 4.5}{8}$

Add

$34.6$ and

$4.5$ .

$\frac{39.1}{8}$

Step 3

Divide

$39.1$ by

$8$ .

$4.8875$

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.

$4.9$

Find the Mean 1.5 , 4.7 , 6 , 7.7 , 7.7 , 4.5 , 2.5 , 4.5

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