Understanding Grouped Frequency Tables: Organise data into intervals, making it easier to handle large datasets.

Identifying the Modal Class: The modal class is the interval with the highest frequency.

Finding the Median Class: Calculate the median position with (n+1) / 2, where “n” is the total frequency. Then locate this position in the cumulative frequencies.

Estimating the Mean: Find each intervalâ€™s midpoint, multiply by its frequency, then sum these products. Divide by the total frequency to get the estimated mean.

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