Question

Identify an important reason for grouping data.

Short answer

In the event of big data sets, data grouping is important.

Step-by-step solution

Given information

Given in the question that, we need to identify an important reason for grouping data.

Explanation

If the identity of the individuals about whom data is collected, as well as the order in which observations are made, the first step in condensation is to divide the observed range of the variable into a suitable number of class-intervals and record the number of observations in each class.