Question

the mean of hundred observation is 50 if one of this observation which was 50 is replaced by 150 what will be the resulting mean ​

Answer 1

Answer:

I think the ans is 49..

as the one 50 was replaced by 150 so ur equation will be .... x+100/100 = 50 ..

by solving it..

u will get the ans.. 49

Answer 2

Answer:

mean of 100 observation = 50

sum of 100 observation = 100*50

=5000

term replaced = 50

replaced by = 150

total term replaced = 150 -50

= 100

new sum = 5000-100

= 4900

new mean = 4900/100

=49