Figure 4
A scatter plot of a normal probability plot with hundreds of data points. The x-axis represents the observed cumulative probability, and the y-axis represents the expected cumulative probability. The data points are plotted along a diagonal line, indicating a normal distribution. A regression line is present, running diagonally from the bottom left to the top right. The plot assesses the normality of the analyzed variables. All values are approximated.Normal probability (P–P) plot assessing the normality of the analysed variables. Source(s): Authors' calculations