Mathematics for IGCSE & O level - Categorical, Numerical And Grouped Data (Section 9 - No. 16)
What is the main reason for using class midpoints when estimating the mean from grouped data?
To determine the range of the data.
To represent all values in the class interval by a single representative value.
To calculate the mode of the data.
To find the number of data points in each class.
Explanation
Class midpoints are used as representative values to estimate the mean in grouped data calculations.
Comments (0)
