Basic Math Examples

150

$150$ ,

125

$125$ ,

135

$135$ ,

138

$138$ ,

152

$152$ ,

156

$156$ ,

190

$190$

Step 1

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

\frac{150 + 125 + 135 + 138 + 152 + 156 + 190}{7}

$\frac{150 + 125 + 135 + 138 + 152 + 156 + 190}{7}$

Step 2

Simplify the numerator.

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Step 2.1

Add

150

$150$ and

125

$125$ .

\frac{275 + 135 + 138 + 152 + 156 + 190}{7}

$\frac{275 + 135 + 138 + 152 + 156 + 190}{7}$

Step 2.2

Add

275

$275$ and

135

$135$ .

\frac{410 + 138 + 152 + 156 + 190}{7}

$\frac{410 + 138 + 152 + 156 + 190}{7}$

Step 2.3

Add

410

$410$ and

138

$138$ .

\frac{548 + 152 + 156 + 190}{7}

$\frac{548 + 152 + 156 + 190}{7}$

Step 2.4

Add

548

$548$ and

152

$152$ .

\frac{700 + 156 + 190}{7}

$\frac{700 + 156 + 190}{7}$

Step 2.5

Add

700

$700$ and

156

$156$ .

\frac{856 + 190}{7}

$\frac{856 + 190}{7}$

Step 2.6

Add

856

$856$ and

190

$190$ .

\frac{1046}{7}

$\frac{1046}{7}$

\frac{1046}{7}

$\frac{1046}{7}$

Step 3

Divide.

149.42857142

$149.42857142$

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.

149.4

$149.4$