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Calculate the interquartile range?

William Cain

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Rodney Fox on January 6, 2019

Inter quartile range: quartiles are the data elements of 1/4, 1/2 and 3/4 through a sorted list: 23 25 29 < Quartile 1 31 34 35 < Quartile 2 (Median) 36 37 38 < Quarti3 40 42 Interquartile range is Quartile 3-Quartile 1; In this case, 38-29= 9) is a measure of how the data is disseminated. How to calculate from mean and standard devation : mean = or sexual. dev = s Search .2465 in the z-table as 24.65% of the data lies to the left of Q1 and you will find z = -0.7. You know s and u, so solve for x. z = (x-u)/s x = u + sz 24.65% of the data lies to the right of Q2. To find the value of z for 1 - 0.2465, repeat.


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