Owning Palette: Process Statistics Graphing VIs
Installed With: Statistical Process Control Toolkit
Given the process mean and sigma, creates a graph of a normal probability distribution function (PDF) for the process. Also returns an array of XY values for the normal distribution. This graph is useful for viewing the estimated distribution of a sample or group of samples or for plotting a normal PDF against a histogram.

![]() |
# points to plot (50) is the number of points to create for the PDF plot. Normally, you can leave this unwired. By default, 50 points are plotted. |
![]() |
process mean is the estimated process mean. See the Process Mean & Sigma VI for calculating this value. |
![]() |
process sigma is the estimated process sigma. See the Process Mean and Sigma VI or the Sample Statistics VI to calculate this value. |
![]() |
PDF height is the height to draw the PDF. If 0, the VI will draw the PDF with a height proportional to 1/sigma, corresponding to an area of 1 under the PDF curve. When fitting a normal PDF to a histogram, use the PDF height output from the Fit Nrml PDF to Histogram VI. |
![]() |
PDF width (+/- sigma) is the width to draw the PDF in terms of ± sigma. By default, the width is 3, and the VI draws the PDF from –3 sigma to +3 sigma. |
![]() |
normal PDF graph is an XY graph of a normal PDF with the specified height, width, and number of points. |