Question

What stament below is incorrect?

The mean is not affected by the existence of an outlier,
The median is not affected by the existence of an outlier,
The standard deviation is affected by the existence of an outlier,
The interquartile range is unaffected by the existence of an outlier

Answer 1

The correct answer, or in this case, the incorrect statement is the mean is not affected by the existence of an outlier.