Find the mean of the following data f 80 - 89 Class: 20 - 29 30-39 40 - 49 50 - 59 60 - 69 70-79 Frequency: 5 7 8 10 14 2
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x = 50 2195 =43.9
Therefore, Mean deviation about Mean,
∑f ∑f i
(x i −M) = 50 1748.8 = 34.976
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Hope it's correct thank you
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