In F-test, S12 and S22 are defined as

S_{1}^{2} = \frac{\sum ( X _{1} - X _{1} ) ^{2}}{n _{1} - 1}, S_{2}^{2} = \frac{\sum ( X _{2} - X _{1} ) ^{2}}{n _{1} - 1}

S_{1}^{2} = \frac{\sum ( X _{1} - X _{1} ) ^{2}}{n _{1} - 1}, S_{2}^{2} = \frac{( X _{2} - X _{2} ) ^{2}}{n _{1} - 1}

Answer

S_{1}^{2} = \frac{\sum ( X _{1} - X _{1} ) ^{2}}{n _{1} - 1}, S_{2}^{2} = \frac{\sum ( X _{2} - X _{2} ) ^{2}}{n _{2} - 1}

None of the above

Answer: Option B

Answer: Option B

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