Question

mean of 8 observations is 25 if one observation 11 is excluded find the mean of remaining ​

Answer 1

Answer:

20

Step-by-step explanation:

mean of 8 observation = 25

mean of the remaining = 25 ×2

= 50

= 50 - 11 =39

mean = 39 +1/2

= 40/2

= 20

plz follow me,

and mark the answer as brainliest...

Answer 2

Answer:

27

Step-by-step explanation:

let the sum of all the observations be 'x'

the total number of observations=8

mean of the observations=25

arithmetic mean=sum of the observations/number of observations

x/8=25

x=25*8

x=200

then the new mean excluding 11 will be

200-11/7

= 189/7

= 27

therefore,the arithmetic mean of the observations excluding 11 is 27.

If you find this answer helpful please mark as brainliest answer!