Find the Mean 8.3 , 4.5 , 6.2 , 9.6 , 4.3 , 11.2 , 5.9 , 9.7 , 10.5

$8.3$ , $4.5$ , $6.2$ , $9.6$ , $4.3$ , $11.2$ , $5.9$ , $9.7$ , $10.5$

Step 1

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

$\frac{8.3 + 4.5 + 6.2 + 9.6 + 4.3 + 11.2 + 5.9 + 9.7 + 10.5}{9}$

Step 2

Simplify the numerator.

Add $8.3$ and $4.5$ .

$\frac{12.8 + 6.2 + 9.6 + 4.3 + 11.2 + 5.9 + 9.7 + 10.5}{9}$

Add $12.8$ and $6.2$ .

$\frac{19 + 9.6 + 4.3 + 11.2 + 5.9 + 9.7 + 10.5}{9}$

Add $19$ and $9.6$ .

$\frac{28.6 + 4.3 + 11.2 + 5.9 + 9.7 + 10.5}{9}$

Add $28.6$ and $4.3$ .

$\frac{32.9 + 11.2 + 5.9 + 9.7 + 10.5}{9}$

Add $32.9$ and $11.2$ .

$\frac{44.1 + 5.9 + 9.7 + 10.5}{9}$

Add $44.1$ and $5.9$ .

$\frac{50 + 9.7 + 10.5}{9}$

Add $50$ and $9.7$ .

$\frac{59.7 + 10.5}{9}$

Add $59.7$ and $10.5$ .

$\frac{70.2}{9}$

Step 3

Divide $70.2$ by $9$ .

$7.8$

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.

$7.8$

Find the Mean 8.3 , 4.5 , 6.2 , 9.6 , 4.3 , 11.2 , 5.9 , 9.7 , 10.5

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