How Do You Calculate a Z-Score/ Sigma Level?

The benefit of using a z-score in usability metrics was explained in “What’s a Z-Score and why use it in Usability Testing?” this article discusses different ways of calculating a z-score. The short answer is: It depends on your data and what you’re looking for. If you’ve encountered the z-score in a statistics book you

Read More »
0
    0
    Your Cart
    Your cart is emptyReturn to Shop
    Scroll to Top