Answer
The normal probability plot says that the data is normal if the plot of the actual data and the expected z-score is linear and the data is not normal if the plot is nonlinear.
Work Step by Step
The normal probability plot is the plot of the actual observed data and the expected z-score. The observed values are plotted on the horizontal line, and the expected z-score is plotted on the perpendicular axis. If the plot of the actual observed value and the expected z-score is linear, then the data is considered as normal data; otherwise, the data is not normal.
