A cricket coach recorded the runs scored by the players of a team in the last 40 matches as follows: | Runs scored | 0–50 | 50–100 | 100–150 | 150–200 | 200–250 | | Number of players | 6 | 10 | 14 | 7 | 3 |

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Mean of Grouped Data Using Direct Method, Class Mark in Grouped Frequency Distribution, Median Class in Grouped Frequency Distribution | PadhAiPro

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CASE_STUDIESMean of Grouped Data Using Direct MethodClass Mark in Grouped Frequency DistributionMedian Class in Grouped Frequency Distribution3 sub-questions

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If the mean of 2, 9, x+6, 2x+3, 5, 10, 5 is 7, then the value of x is :

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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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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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Find 'mean' and 'mode' of the following data :

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