How Do You Find A Critical Value In 10 Seconds (Two-Tailed Test)?
Stuck on how to find a Critical Value in statistics? This how-to will help you find it in seconds! Let’s say you have an alpha level of .05 for this example, and that this is a two-tailed test. Subtract alpha from 1. 1-0.05=.95. Divide step 1 by two (because we are looking for a two-tailed test). .95/2=.475. Look at your z-table and locate the alpha level in the middle section of the z-table. The fastest way to do this is to use an online z-table and use the find function of your browser (usually CTL F). In this example we’re going to look for .475, so go ahead and do CTL F. Type in .475. In this example, you should have found the number .4650. Look to the far left or the row, you’ll see the number 1.9 and look to the top of the column, you’ll see .06. Add them together to get 1.96.
