37+ Interquartile Range Formula Example
Photos. In the above interquartile range formula, q₁ represents the lower quartile whereas q₃ represents the upper quartile. In descriptive statistics, the interquartile range (iqr), also called the midspread, middle 50%, or h‑spread, is a measure of statistical dispersion.
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It is used in statistical analysis to help draw conclusions about a set of numbers. Image will be uploaded soon. It cuts them out of the data set by only focusing on the distance within the middle 50 percent of the data.
Using the formula above, r equals 6.3.
In a set of data, the quartiles are the values that divide the data into four equal parts. The interquartile range is a much better measure of variation than the regular range (maximum value minus minimum value). In the above interquartile range formula, q₁ represents the lower quartile whereas q₃ represents the upper quartile. Beware of percentiles of tiny data sets.
