Note that the PROBPLOT statement creates a normal probability plot for DIAMETER by default. The nonlinearity of the point pattern indicates a departure from normality. Since the point pattern is ...

One of the most common applications where log-normal distributions are used in finance is in the analysis of stock prices. The potential returns of a stock can be graphed in a normal distribution.

Below are two probability plots for his two sets of data. Notice that one can be considered normal while the other is not. If ...

Figure 2: Q–Q (normal probability) plots compare the differences between two distributions by showing how their quantiles differ. ( a ) Probability plots for n = 40 noise samples and their box ...

The cutting process is in statistical control. As a preliminary step in a capability analysis of the process, it is decided to check whether the distances are normally distributed. The following ...