Question

100 प्रेक्षणों का माध्य 50 है। यदि इनमें से एक प्रेक्षण 50 को 150 से
प्रतिस्थापित कर दिया जाए तो परिणामी माध्य हो जाएगाः
The mean of 100 observations is 50. If one of the observation
which was 50 is replaced by 150, the resulting mean will be.
(A) 50.5
(B) 51
(C) 51.5
(D) 52​

Answer 1

Answer:

your answer is (B) 51

Step-by-step explanation:

Mean of 100 observation =50

∴Total of 100 observation=100×50=5000

If one of the observation 50 is replaced by 150 than total of new observation is=5000−50+150=5100

Hence the mean of new 100 observation=

100

5100

=51