Question

32. The mean of 50 numbers is 30. Later it was discovered that two entries were wrongly entered as 82 and 13 instead of 28 and 31. Find the correct mean.

Answer 1

Answer:

Step-by-step explanation:

Corrected mean =sigma x +correct value- incorrect value/ no. Of observations

Sigma X = mean ×no.of observations

Sigma X = 30 ×50

Sigma X =1500

Corrected mean =1500+28+31-82-13/50

Corrected mean =1464/50

Corrected mean =29.28

Hope dis helps