The mean of 36 observations is 22.If one observation 22 is deleted ,then find the new mean
The following steps are involved in solving the above problem .Arrange then in sequential order .
`therefore `New arithmetic mean `=770/35 = 22`
( B) Arithemetic mean
`="The sum of the observations "/"Total number of the observations"`
`rArr 22 ="The sum of the observations "/36`
( C) The sum of the observations 22 is deleted , the new sum = 792 -22 = 770 and the number of observations is 36 -1 ,i.e 35,.