Fall 2018 9a & Fall 2017 11a

magomago
in Fisher.ExpRating

The 2018 sample solutions use the VAR.S() function to calculate the variances. However, there is a note in the 2017 solutions that warns against doing so.

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I tried solving using VAR.S() in the 2017 problem and I do end up with the right answer when comparing the plans, even though the numbers are slightly off.

Would it be fair to assume we can use VAR.S() in the exam to save time?

Comments

  • adminadmin

    I think the graders would penalize you for using VAR.S() if the question is worth a significant amount of points and there's clearly non-uniform weights such as manual premium or TT counts etc. Otherwise, I think it would be okay to use VAR.S().

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