Question

The geometric mean of 10 observation is found to be 16.2 it was discovered that observations were wrongly recorded at 10.9 in place of 21.9

Answer 1

Answer:

17.8 is the actual mean of the observation.

Step-by-step explanation:

Mean of 10 observation is 16.8

Summation of all the observation= 16.8×10=168.

Now one observation is noted wrong.

21.9 is taken as 10.9

Actual summation of all the 10 observation is 168-10.9+21.9=178.

Therefore mean of the observation is (178/10) =17.8