Methods for Finding Mean in Large Data Sets

The video tutorial covers methods for analyzing large data sets, focusing on calculating the mean. It introduces grouping data into class intervals and explains three methods for mean calculation: the direct method, the assumed mean method, and the step deviation method. Each method is discussed in terms of its application and ease of calculation, especially for large data sets.

How do we estimate the mean from grouped data when exact values are not available?

Describe the assumed mean method and its advantages over the direct method.

What is the step deviation method and how does it simplify calculations?