Box Plot Interquartile Range Math
The interquartile range abbreviated iqr is just the width of the box in the box and whisker plot.
Box plot interquartile range math. Order the numbers smallest to largest 2. Now that we have our box plot we can easily find the interquartile range and upper lower outliers. The interquartile range iqr is therefore 18 4 14. Next we calculate the upper lower outliers.
The interquartile range is the difference between q3 and q1. The iqr can be used as a measure of how spread out the values are. Find the 5 numbers median lower and upper extremes lower and upper quartiles 3 draw the box plot draw a number line draw and label the parts c. That is iqr q3 q1.
Statistics assumes that your values are clustered around some central value.