Web Reference: Jul 23, 2025 · T-Test is a method used in statistics to determine if there is a significant difference between the means of two groups and how they are related. In T-Test statistics, the sample data is a subset of the two groups that we use to draw conclusions about the groups as a whole. To choose the correct t test, you must know whether you are assessing one or two group means. If you’re working with two group means, do the groups have the same or different items/people? Use the table below to choose the proper analysis. Now, let’s review each t test to see what it can do! The t test is one of the simplest statistical techniques that is used to evaluate whether there is a statistical difference between the means from up to two different samples. The t test is especially useful when you have a small number of sample observations (under 30 or so), and you want to make conclusions about the larger population. The charac...
YouTube Excerpt: Note: this video omits one part of the p-value definition, which needs to be covered next after watching this video. The p-value is ...
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