Home
Class 9
MATHS
The average of n numbers x(1), x(2), x(...

The average of n numbers ` x_(1), x_(2), x_(3), ...., x_(n)` is A . If ` x_(1)` is replaced by ( x - a) `x_(1), x_(2)` is replaced by `( x - a) x_(2) , .... ,` then the new average is _____

A

(x - a) A

B

`((x - 1) A - n x_(n))/(n)`

C

`(n A - (n + 1) x_(n))/(n)`

D

` (( n + 1) A - x_(n))/( n)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • STATISTICS

    SCIENCE OLYMPIAD FOUNDATION |Exercise Everyday Mathematics |4 Videos

  • STATISTICS

    SCIENCE OLYMPIAD FOUNDATION |Exercise Achievers Section (HOTS)|3 Videos

  • SOF INTERNATIONAL MATHEMATICS OLYMPIAD

    SCIENCE OLYMPIAD FOUNDATION |Exercise ACHIEVERS SECTION|5 Videos

  • SURFACE AREAS AND VOLUMES

    SCIENCE OLYMPIAD FOUNDATION |Exercise Achievers Section (HOTS)|3 Videos

Similar Questions

Explore conceptually related problems

The average of n numbers x_(1),x_(2),x_(3),..,x_(n) is M. If x_(n) is replaced by x', then new average is

The average of n numbers x_(1),x_(2), …,x_(n) is M. If x_(n) is replaced by x' , then the new average is

The mean of the series x_(1),x_(2),...x_(n) is bar(X). If x_(2) is replaced by lambda then the new mean is

Mean of n observations x_(1), x_(2), ....,x_(n) is bar(x) . If an observation x_(q) is replaced by x'_(q) then the new mean is

If each of n numbers x_(i)=i , is replaced by (i+1)x_(i) , then the new mean is

If each of n numbers x_(i) = i (i = 1, 2, 3, ....n) is replaced by (i + 1) x_(i) , then the new mean is

The average of n numbers x_(1), x_(2), ……. X_(n) is bar(x) . Then the value of sum_(i=1)^(n) (x_(1) - bar(x)) is equal to