## Quartile deviation for Grouped Data

### Posted by mbalectures | Posted in Descriptive statistics | 14,971 views | Posted on 15-06-2010

#### Tagged Under : calculation of coefficient of quartile deviation, calculation of Quartile deviation, Quartile deviation for Grouped Data, Quartile deviation or semi-interquartile range

Quartile deviation or semi-interquartile range is the dispersion which shows the degree of spread around the middle of a set of data. Since the difference between third and first quartiles is called interquartile range therefore half of interquartile range is called semi-interquartile range also known as quartile deviation. For both grouped and ungrouped data, quartile […]