Statistics Examples

$\begin{array}{c} Class & Frequency \\ 10 - 14 & 1 \\ 15 - 19 & 3 \\ 20 - 24 & 9 \\ 25 - 29 & 2 \end{array}$

Step 1

Add up all of the frequencies.

$1 + 3 + 9 + 2 = 15$

Step 2

Find the median of the integers from $1$ to $15$ .

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Step 2.1

Arrange the terms in ascending order.

$1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15$

Step 2.2

The median is the middle term in the arranged data set.

$8$

Step 3

Starting with $0$ , add the frequencies in the table starting with the first row until you reach $8$ . The median class interval is the corresponding class where the median value falls.

Median Class: $20 - 24$