Question

if the average of 8 observations is 5. if an observation 12 is removed then the average of new set of observation is​

Answer 1

Answer:

Average of new set of observations is $= 4$

Step-by-step explanation:

The average of 8 observations is 5

∴ Sum of the 8 observations is Average x Number of observations = 5x8 = 40

If an observation 12 is removed:

Then Sum of remaining 7 observations = 40 - 12 = 28

Average of new set of observations is $\frac{28}{7} = 4$