Question

Three friend A, B and C have 8, 10 and 12 chocolates respectively. Then has the chocolates which is equal to the average number of chocolates.

• A. B
• B. C
• C. A

Answer 1

The correct option is A B

Let $a$ be the assumed mean and value of $a$ be 10.

Person	No. of chocolates($x_i$)	Deviation ($x_i-a$)
A	8	-2
B	10	0
C	12	2

From the above table, we get
sum of deviation $=-2+0+2=0$

$⟹\text{Actual mean}=\text{Assumed mean}$$\Rightarrow \text{Actual mean}=10$

Here, B has 10 chocolates and is equal to the average of distributed number of chocolates.