The mean of 22 observations is 35. It was later discovered that 16 and 24 are misread as 31 and 42. What is the correct mean?
Given average=35
Sum=35*22
=770
Adding and removing the original values and misread values respectively i.e
770-72+42
=738
Correct mean=738/22
=33.54
Create a FREE account and get:
Quick, Easy and Effective Revision
By proceeding you agree to create your account
Free CAT Formulae PDF will be sent to your email address soon !!!
