Mathematics for IGCSE & O level - Categorical, Numerical And Grouped Data (Section 8 - No. 2)
In a grouped frequency table, the interval midpoints are used primarily for what purpose?
To determine the mode of the data.
To estimate the mean of the data.
To calculate the range of the data.
To determine the median of the data.
Explicaţie
Interval midpoints, multiplied by the frequencies, allow for an estimate of the mean.