Question

the mean of 80 items is 25. at the time of calculation 2 items are wrongly taken as 16 and 40 instead of taking 16 and 4 are correct.find the correct mean.

Answer 1

Correct ans is 24.55

Answer 2

Answer:

The correct mean is 24.

Step-by-step explanation:

Since we have given that

Number of observations = 80

Mean = 25

According to question, it was mistakenly taken as 60 and 40 instead of 16 and  4.

So, it becomes,

So, the correct mean would be  

Hence, the correct mean is 24.