An informal test for normality that utilizes a scatterplot and looks for clustering around a 45° line is known as a(n)
A)Lilliefors test.
B)empirical cumulative distribution function.
C)p-test.
D)quantile-quantile plot.

Question

Quizplus · Accepted Answer

A quantile-quantile plot (Q-Q plot) is used to determine if a dataset comes from a certain distribution, such as a normal distribution. The data points are plotted against the expected values from the theoretical distribution, and if the dataset is similar to the theoretical distribution, the points will cluster around the 45° line.

An Informal Test for Normality That Utilizes a Scatterplot and Looks