1.

for a given set of 100 observations mean was calculated to be 55 afterwards it was noticed that one observation 50 was wrongly taken as 60 find the correct average​

Answer»

Step-by-step explanation:

mean of 100 observations = 55

Total of 100 observations = 5500

Total of 99 observations = 5500 -50 = 5450

Total of CORRECTED 100 observations = 5450 + 60 = 5510

the correct AVERAGE = 5510 / 100 = 55.1



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