Saturday, March 12, 2016

How to calculate the Interquartile Range( IQR)-Statistics

In this video you will learn how to find the interquartile range,the Q1, and Q3 of a data set.


Follow these steps to find the IQR.

How to determine the Q1, Q3 AND IQR
Step #1: Order the numbers from greatest  to least.
Step #2: Indentify the extreme values.
Step #3: Find the MEDIAN of the data set
Step #4: Find  the UPPER QUARTILE ( Q3) which is the MEDIAN of the
              UPPER HALF of the data. You will only use the data to the
              right of the original median for this step.
Step #5: Find Q1 or the LOWER QUARTILE which is the MEDIAN of
              the LOWER HALF of the data). You will only use the data to
              the left of the original median for this step.
Step #6: Calculate the INTERQUARTILE RANGE by subtracting the
               LOWER QUARTILE from the UPPER QUARTILE.







Follow moomoomath's board Math Resources and helpful information on Pinterest.