The following table shows the results of an analysis of variance comparing four treatment conditions with a sample of n = 6 participants in each treatment.  Note that several values are missing in the table.  What is the missing value for the F-ratio? Source         SS      df      MS      Between      36      xx      xx      F = xx Within         xx      xx      xx Total            60      xx                12.00     7.50     2.00     10.00

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