Link: Stats

What is ANOVA

Analysis of Variance (ANOVA) is a statistical method used to analyze the differences between the means of two or more groups.

ANOVA is very similar to t-test, but it’s for more than 2 groups.

Steps of conducting ANOVA

The steps are also similar to t-test.

  1. Calculate overall mean. Note: = 1

  2. Calculate SS(means). Now we have multiple lines instead of two lines.

  3. Fit the data and get the equation

  4. Calcualte SS(fit) for each lines

  5. Calculate F-value