Finally, we calculate IQR: IQR = Q3 – Q1 = 12 – 4 = 8. In this case, the IQR is 8. This tells us that the central half of this dataset falls between the values of 4 and 12. In conclusion, calculating ...

Learn how to calculate the interquartile range from a variety of different data types and draw and interpret box-and-whisker diagrams.

To find the interquartile range. Start by putting the values in order \ ... Reading from the graph, the lower quartile is 38. To find the upper quartile, find ¾ of 40, ...