Question

What does the interquartile range tell us?

Answer 1

One would often look at the IQR (Interquartile Range) to get a more "Realist" look at the data, as it would eliminate the outliers in our data.

Thus if you had a data set such as
`4,6,5,7,2,6,4,8,2956`

Then if we had to take the mean of just our IQR it would be more "Realistic" to our data set, as if we just took the normal mean, that one value of `2956` will mess up the data quite a bit.

an outlier as such could come from something as simple as a typo error, so that shows how it can be useful to check the IQR