Question

Find the mean of the following observation:
observation=50,52,77,82,85
frequency=5,7,6,3,4
​

Answer 1

Answer:

Mean = [ 5(50) + 7(52) + 6(77) + 3(82) + 4(85) ] / (5+7+6+3+4)

= (250+364+462+246+340)/ 25

= 1662/25

= 66.48

Explanation:

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