# Semi Interquartile Range Calculator

A quartile is defined as three points that divide the statistical data arranged in sequence into four groups. The following semi interquartile range calculator helps you to determine the mid and semi quartiles for any given input values.

## Mid and Semi Quartiles Calculation

A quartile is defined as three points that divide the statistical data arranged in sequence into four groups. The following semi interquartile range calculator helps you to determine the mid and semi quartiles for any given input values.

Code to add this calci to your website

#### Formula:

*Mid Quartile* = ( Third Quartile + First Quartile ) / 2
*Semi Quartile* = ( Third Quartile - First Quartile ) / 2
The semi-interquartile range is an assessment of the amount of spread or dispersion. It is calculated as one half the difference between the 75th percentile and is generally called as Q3 and the 25th percentile (Q1). The equation **(Q3-Q1)/2** will give is used for calculating the range. Since half the scores in a distribution lie between Q3 and Q1, the semi-interquartile range is the 1/2 of the distance needed to cover 1/2 the scores. The semi-interquartile range is affected slightly due to the extreme scores, so it is a good measure of spread for skewed distributions. Use the below given **semi interquartile range calculator** to do mid and semi quartiles calculation and also the median with ease.