An outlier is
A)a data point that falls more than two standard deviations away from the mean.
B)a data point that falls more than three standard deviations away from the mean.
C)a data point that exceeds the median.
D)a data point that falls below zero.

Question

Quizplus · Accepted Answer

An outlier is a data point that falls more than three standard deviations away from the mean. This means it is an extreme value that is significantly different from the majority of other data points in the dataset. Other definitions, such as A and C, are related to other statistical concepts but do not fully capture the definition of an outlier. Answer D is incorrect because falling below zero does not necessarily make a data point an outlier, as it depends on the context and nature of the data.

An Outlier Is