Question

MEAN OF 8 OBSERVATIONS IS 25. IF ONE OBSERVATION 11 IS EXCLUDED, THEN FIND THE MEAN OF THE REMAINING.

Answer 1

Answer:

Mean of 8 observations is 25

i.e.

Step-by-step explanation:

25 = sum of all observations / 8

8x25 = sum of all observations =200

Now one of the observation i.e. 11 is excluded

200 - 11 = 189

No. of observations remained after excluding =7 so Now the Mean of remaining =189 / 7 = 27 is the answer

Answer 2

ANSWER : mean of eight observation =25

some of eight observation =8*25

=200

If one observation 11 is excluded from the data them sum of the 7 observation =200-11

=189

mean of 7 observation

= 189/7

=27/7

mean of 7 observation = 27