Question

The value of Σfx is 180, A= 22, and width of class interval is 5, arithmetic mean is 120 then the observations are

a.

59

b.

30

c.

39.5

d.

49.5

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Answer: (b).30

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Q. The value of Σfx is 180, A= 22, and width of class interval is 5, arithmetic mean is 120 then the observations are

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