The value of Σfx is 180, A= 22, and width of class interval is 5, arithmetic me

Question

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

Options:

A . 59

B . 30

C . 39.5

D . 49.5

Answer: Option B
Answer: (b).30

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