and you decide to check whether the process distribution is normal. The following statements create a Q-Q plot for DISTANCE, shown in Figure 10.1, with lower and upper specification lines at 9.5 cm ...

In other words, even if the underlying data do not exactly follow a normal distribution ... The final graphical tool for assessing the distribution of a set of data is the normal probability plot (i.e ...

normal, Weibull, or Weibull2 distribution or the required shape parameter for the lognormal option SIGMA= Specify slope of distribution reference line for the lognormal or Weibull2 distribution SLOPE= ...

As with all probability distributions, the Normal Distribution ... not approximately distributed as the above, you may not want to declare your data is normal. You can use a graphical Probability ...