Asked by Sohmay

find the range, interquartile range and 50th percentile of the following distribution.
20, 28, 10, 20, 19, 30.

I got a range of 20, but I had forget find the remaining part of the question. Pls some one help me.
Answered by PsyDAG
We can find the interquartile range or IQR in four simple steps:
Order the data from least to greatest.
Find the median (50th percentile).
Calculate the median of both the lower and upper half of the data.
The IQR is the difference between the upper and lower medians.
Answered by Sohmay
Please help me I have arranged them in an ascending order ( 10, 19, 20, 28, 30) but I don't know how to do the remaining part of the question.
Answered by PsyDAG
The median is the middle score. The medians for upper and lower half are 28 and 19 respectively. Take it from there.
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