Question

Calculate the approximate mean number of fruits in a packaging box using step deviation method.

• A. $267$
• B. $280$
• C. $290$
• D. $250$

Answer 1

The correct option is A $267$

Answer:-

Class interval width (i) = 200

No. of apples X	No. of workers F	$u=\frac{X-A}{i}$	Fu
100 = A	5	0	0
300	4	1	4
500	3	2	6
	$\Sigma f=12$		$\Sigma fu=10$

By using step deviation method

Mean = $A+\frac{\Sigma fu}{\Sigma f}=100+\frac{10}{12}\times 200=100+166.66=266.66\simeq 267$

A) 267