Question

What needs to be done for calculating the mean for a continuous series?

Answer 1

Determine the procedure for calculating the mean for a continuous series.

The midpoints should be calculated by taking the average of the upper and lower limits of each class interval.

The midpoints of the various class intervals are used to calculate the mean of a continuous series.

If the class is like $90-100$ then the mean is $95$.

Hence, to calculate the mean of a continuous series, mid points of the various class intervals is taken.