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Statistics Examples Average Descriptive Statistics

Find the Mean

$120$ , $130$

Step 1

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

$\frac{120 + 130}{2}$

Step 2

Cancel the common factor of $120 + 130$ and $2$ .

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Step 2.1

Factor $2$ out of $120$ .

$\frac{2 \cdot 60 + 130}{2}$

Step 2.2

Factor $2$ out of $130$ .

$\frac{2 \cdot 60 + 2 \cdot 65}{2}$

Step 2.3

Factor $2$ out of $2 \cdot 60 + 2 \cdot 65$ .

$\frac{2 \cdot (60 + 65)}{2}$

Step 2.4

Cancel the common factors.

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Step 2.4.1

Factor $2$ out of $2$ .

$\frac{2 \cdot (60 + 65)}{2 (1)}$

Step 2.4.2

Cancel the common factor.

$\frac{2 \cdot (60 + 65)}{2 \cdot 1}$

Step 2.4.3

Rewrite the expression.

$\frac{60 + 65}{1}$

Step 2.4.4

Divide $60 + 65$ by $1$ .

$60 + 65$

Step 3

Add $60$ and $65$ .

$125$

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Average Descriptive Statistics

More step-by-step Statistics examples from this chapter.

Finding the Median Finding the Mode Finding the Geometric Mean Finding the Quadratic Mean (RMS) Find the Mean Absolute Deviation Finding the Minimum Finding the Maximum Finding the Mid-Range (Mid-Extreme) Finding the Lower or First Quartile Finding the Upper or Third Quartile Finding the Interquartile Range (H-Spread) Finding the Midhinge

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$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$