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what is the Q1 Q3 and IQR of 2-7-13-14-15-21-21-24-25-26-30-39-40-43-44-44-46

Sagot :

The first quartile of this data will be 15, because 12 numbers are above it in the dataset, and 4 are below it, so 1/4 of the dataset is below it.

The third quartile will be 40, because 4 numbers are above it and 12 are below it (so 1/4 are above it).

The IQR (inter-quartile range) is the difference between these numbers, or 40-15=25.