In the last article we learned basics about data distributions and why it is important to know how your data is distributed to perform statistical tests. In this video tutorial we will show you how you can determine how your data is distributed in the statistics software GSS (Guided Statistics...
Why care about data distribution? Most statistical tests are based on assumptions regarding data distributions. Hence, when we do statistics, we always have to think about how our data is distributed. Normal data distributions A large part of statistics is based on the normal distribution, because it’s so easy to...
When doing statistics analyses, one of the most frequently asked questions will be “is there a difference between two groups?” The two-sample t-test The two-sample t-test is a powerful tool in statistics, that has been developed just for this purpose, i.e. to compare the means of two groups. Imagine you’re...
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