The lengths of 40 leaves of a plant are measured, correct to the nearest millimetre and data obtained is represented in the following table : Length in (mm) | Number of leaves 100 – 120 | 8 120 – 140 | 9 140 – 160 | 12 160 – 180 | 5 180 – 200 | 6 Find the median length (in mm) of the leaves.

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TextMean of Grouped Data Using Direct MethodMedian of Grouped DataCBSE PYQ

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The class mark of the median class of the following data is :

MCQ (Single)Class Mark in Grouped Frequency DistributionMedian of Grouped Data

A class teacher has the following absentees record of 30 students of a class. Number of days | 0 – 4 | 4 – 8 | 8 – 12 | 12 – 16 | 16 – 20 | 20 – 24 Number of Absent students | 1 | 8 | x | 6 | 5 | y If the mean number of days a student was absent is 12, find the values of x and y.

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