Central Tendency Of Grouped Data Formula. In general if there are N observations as X 1. For grouped data class mode or modal class is the class with the highest frequency.
F frequency of the median class. These midpoints must then be multiplied by the frequencies of the corresponding classes. Find the group with the highest frequency modal group.
Cfb Cumulative Frequency of the Groups Before the Median Group.
Dispersion from Grouped Data Preparing for This Section Before getting started review the following. F frequency of the median class. Median L N 2 F b f c. Formula for the Mean Calculating the mean with grouped scores Mean.
