Question

The mean of 17 observations is 30,three observations 20,30 and 40 are deleted and one observation 90 is included. Then, find the means of the final observation​

Answer 1

Answer:

36

Step-by-step explanation:

Sum of the 50 observations =36×50=1800

Two observations 30 and 42 are deleted

then sum of the remaining 48 observations =1800−[30+42]=1728

Therefore  req. mean =  

1728/48

​  

=36