Averages from Grouped Frequency Table

🎬 Video Tutorial

You must be a member of Math Angel Plus or Math Angel Unlimited to view this content.

Already a member? Log in here

(0:01) What is A Grouped Frequency Table?: A grouped frequency table organises data into intervals, making it easier to handle large datasets.
(0:50) What is the Modal Class?: The modal class is the interval with the highest frequency.
(1:10) How to Find the Median Class?: Calculate the median position with $\large \frac{N + 1}{2}$, where $N$ is the total frequency. Then, locate this position in the cumulative frequencies.
(2:00) How to Calculate the Mean?: Find each interval’s midpoint, multiply by its frequency, and then sum these products. Divide by the total frequency to get the estimated mean.