Basic Math Examples

$51$ ,

$44$ ,

$31$ ,

$42$ ,

$52$ ,

$39$ ,

$55$

Step 1

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

$\frac{51 + 44 + 31 + 42 + 52 + 39 + 55}{7}$

Step 2

Simplify the numerator.

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Step 2.1

Add

$51$ and

$44$ .

$\frac{95 + 31 + 42 + 52 + 39 + 55}{7}$

Step 2.2

Add

$95$ and

$31$ .

$\frac{126 + 42 + 52 + 39 + 55}{7}$

Step 2.3

Add

$126$ and

$42$ .

$\frac{168 + 52 + 39 + 55}{7}$

Step 2.4

Add

$168$ and

$52$ .

$\frac{220 + 39 + 55}{7}$

Step 2.5

Add

$220$ and

$39$ .

$\frac{259 + 55}{7}$

Step 2.6

Add

$259$ and

$55$ .

$\frac{314}{7}$

Step 3

Divide.

$44.85714285$

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.

$44.9$