From the course: Statistics Foundations 4: Advanced Topics
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One-way ANOVA and the sum of squares total (SST)
From the course: Statistics Foundations 4: Advanced Topics
One-way ANOVA and the sum of squares total (SST)
- As we begin our one-way analysis of variance, or one-way ANOVA, we'll first want to calculate our total sum of squares, which is referred to as SST. In case you're wondering, SST stands for the slightly more awkward sounding sum of squares total. Once again, here are the data for our four small independent data sets. Remember, these are customer ranks of four different mobile service companies. Customers rated the companies on a scale of one to 10. Before we move on, I want to note that while our very simple example has the same number of responses for each of the four companies, ANOVA actually allows us to have different numbers of data points for each individual data set. In any case, let's get back to calculating our SST, our total sum of squares. First, we want to calculate the mean score for each company's data set. Air Mobile's average was three. Binge Mobile and Data Roam both average five. And ComMobile…
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