TYPE Subcommand (PPLOT command)

TYPE specifies the type of plot to produce. The default is Q-Q. The plots show a quantile-quantile plot and a proportion-proportion plot using the same data (with a normal distribution).

Q-Q. Quantile-quantile plots. The quantiles of the observed values are plotted against the quantiles of the specified distribution.

P-P. Proportion-proportion plots. The observed cumulative proportion is plotted against the expected cumulative proportion if the data were a sample from a specified distribution.

Figure 1. Normal q-q plot of household income
Normal q-q plot of household income
Figure 2. Normal p-p plot of household income
Normal p-p plot of household income