Lower Quartile Range Formula. The interquartile range iqr is the spread of the middle 50 of the data values. What it basically means is that in a data set with n data points.
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The lower quartile is the third term which is 6. The formula for quartiles is given by. The lower quartile is the median of the lower half of the data.
The formula for quartiles is given by.
Here the average needs to be taken which is of 2 nd and 3 rd terms which are 45 and 50 and the average formula of same is 45 50 2 47 50. Interquartile range q3 q1. Middle quartile q2 n 1 2 4. The upper quartile q 3 is the median of the upper half of the data set.
