Given:
59, 63, 64, 65, 66, 67, 67, 74, 81, 81, 88, 91.
The number of data =12.
Aim:
We need to find the minimum, Lower quartile, Median, Upper quartile, Maximum, and Interquartile range.
Step-by-step explanation:
The minimum number is the smallest number of the data set.
The minimum =59.
Divide the given set into 4 equal parts.
To find the lower quartile consider the set.

The middle terms of this set are 66.
Consider the
The middle terms of the given set are