The Significance of the Difference Between Two Independent Proportions. Compute p-values with just a click. RatioDiff compute p-values. Just drag and drop your Excel spreadsheet file onto the logo. Two extra sheets will be inserted "z-values" and "p-values". The computation is based on the comparison of proportions in paired samples.
If the proportion of interest in the first sample is pa = ka/na and that of the paired sample is pb = kb/nb and if the kis are not too small or too big and the nis are not too small. The output is immediately saved in a file on your desktop.

Please Note: this program is a Java Web Start Application, you need to right-click on the download file and choose "Launch".

Requirements:
* Java

The license of this software is Freeware, you can free download and free use this calculator software.