Calculate mean from the given data and write the
conclusion :
Marks Frequencies
4 5
6 10
9 20
10 7
15 8
Answers
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Step-by-step explanation:
mean = ∑fx / ∑f
∑fx = 20 + 60 + 180 + 70 + 120 = 450
∑f = 5+10+20+7+8 = 50
thetefore mean = ∑fx / ∑f = 450 / 50 = 9
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