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
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
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.
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.