Question

mean of 100 observation is 50 replace by 40 what will the value
​

Answer 1

Answer:

51

Step-by-step explanation:

Sum of observations/ Number of observations

So, if mean of 100 observations is 50 , then sum of hundred observations = No of observations× Mean

= 100×50

=5000

Now as we have told , An observation 50 was replaced by 150 . So new sum of observations→

5000-50+150

= 5000+100

= 5100

New mean → 5100/100

= 51.

Answer → New mean is 51.