find the mean of the following distribution. weight in kg 30,31,32,33,34 no of students 8,10,15,8,9
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Answer:
ans = 32
Step-by-step explanation:
Weight no. Students fx
30 8 240
31 10 310
32 15 480
33 8 264
34 + 9 +306
_______ ________
∑ f = 50 ∑ fx = 1600
mean = 50 / 1600
= 32
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