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# Cummulative Frequency graph

A curve or a graph of a cummulative frequency is called cumulative frequency curve or give.

Cummulative frequency or give is used for the determination of a median, quartiles, deciles & percentage.

Median: This is a middle term. It is half of a cummulative frequency.

Quartiles:Here, the cummulative frequency is divided into four places.

Deciles: Here, the cummulative frequency is divided into ten places.

Percentiles: Here, the cummulative frequency is divided into hundred places.

Example:The frequency distribution of the hundred participant in a high jump competition as shown below.

1. Construct the cumulative frequency table
2. Draw the cumulative frequency curve

Solution

To construct the cumulative frequency curve, you need the class mid-point and the class boundary

N.B: 1st cumulative frequency is the same as first frequency

last cumulative frequency is the same as total frequency

## Cummulative Frequency Curve

Scale: 1cm to 10 unit on cum. freq axis
2cm to 10 unit on class mark axis

## Cummulative Frequency Curve slideshow examples

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