This is a training and education tool for quality control in healthcare laboratories. It is designed to help users to calculate basic quality control data, such as mean, standard deviation, cumulative mean, cumulative standard deviation, etc.
In addition to these basic quality control calculations, users may also create control charts with different defined control limits, as well as histograms. Specifically, users will be able to create Levey-Jennings Control Charts that are best suited for healthcare laboratories. These control charts will be "blank" - with control lines drawn but no data plotted.
Note that the graphics generated will "pop up" - you will need to allow pop up windows in your browser.
Please let us know what you think of them.
See QC - The Calculations for an explanation and equations for these calculations.< See QC Calculator Problem Set if you want to work with some sample data. NOTE: These Javascript Calculators only work on browsers that support Javascript!
To calculate cumulative control limits, enter the previous month's figures for n, sum of x, and sum of x squared, then push the "Total" button. To calculate monthly control limits, just push the "Total" button and only the monthly figures will be used.