Question

Estimate the mean number of apples in a packaging box using step deviation method.

• A. $41$
• B. $42$
• C. $43$
• D. $44$

Answer 1

The correct option is A $41$

Answer:-

Class interval width (i) = 12

No. of apples X	No. of workers F	$u=\frac{X-A}{i}$	Fu
12	2	-2	-4
24	1	-1	-1
36 = A	4	0	0
48	6	1	6
60	3	2	6

$\Sigma fu=7$

$\Sigma f=16$

By using step deviation method

Mean = $A+\frac{\Sigma fu}{\Sigma f}=36+\frac{7}{16}\times 12=36+5.25=41.25\simeq 41$

A) 41 apples