| DataLab is a compact statistics package aiming at exploratory data analysis. Please visit the DataLab Web site for more information.... |
Home  Features of DataLab Displaying Data Plot Types Normal Probability Plot |
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Normal Probability Plot
DataLab offers the normal probability plot as a graphical technique for assessing whether or not a dataset is normally distributed. The observations are plotted against a theoretical normal distribution (the z-scores) resulting in a straight line if the data are normally distributed. The y-axis shows the z-scores of a standard normal distribution in parallel to the corresponding quantiles. Further, the plot also shows the mean and the standard deviation of the selected data, the square of the correlation coefficient, and the ideal line where the data should be located if they are distributed normally.
 ) in a data plot window. You can select either rows, columns, or the entire dataset for the normal probability plot. When selecting row or colums you can select the particular row/column using the eye-dropper button ( ) or the arrow buttons.
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