What is the semi interquartile range Designed for students like you! The semi interquartile range (sir) (also called the quartile deviation) is a measure of spread
It tells you something about how data is dispersed around a central point (usually the mean) This will not be true for a skewed distribution, however. The sir is half of the interquartile range.
The median is considered the second quartile (q2) The interquartile range is the difference between upper and lower quartiles When the data set is small, it is simple to identify the values of quartiles Let’s look at an example.
It is the distance between the 1st quartile and the 3rd quartile, halved It is common to describe a variable using a measure of central tendency, or average, most commonly the mean or median. What is semi interquartile range
