Question

Why do you think sample size differs between untransformed and log-transformed variables?

Answer 1

Answer

Sample size differs between untransformed and log-transformed variables because of the error amount that is present in untransformed variables and absent in log transformed variable.

The residual or error present in variables can change the final result or conclusion made by the researcher as there are chances in the untransformed data that the researcher might select a non-normal variable to make the final conclusion, whereas this is not the case in log transformed variable. Log transformation reduces the amount of error or residual in each variable which makes the sample data values almost normal.