Question

# If the mean of the set of numbers $$x_1, x_2, x_3,\cdots x_n$$ is $$\bar{x}$$ then the mean of numbers $$x_i+2i$$$$\forall i=1, 2, 3,\cdots n$$ such that $$1\leq i\leq n,$$ is

A
¯x+n
B
¯x+n+1
C
¯x+2
D
¯x+2n

Solution

## The correct option is A $$\bar{x}+n+1$$Required mean $$=\displaystyle \frac{\sum_{i=1}^{i=n} \left(x_i+2i\right)}{n}=\frac{\sum x_i}{n}+2.\frac{\sum n }{n}=\bar{x}+n+1$$Mathematics

Suggest Corrections

0

Similar questions
View More

People also searched for
View More