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Expected value of $\bar x^2$ shows different values when calculating through different equations.

The line after "Also using the Estimator" is incorrect. It should be $$E(\bar x^2) = E\left(\left(\frac{1}{n}\sum_{i=1}^n x_i\right)^2\right) = E\left(\left(\frac{1}{n}\sum_{i=1}^n x_i\right)...
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  • 2,053
1 vote

Stanine calculation - Do I omit blank scores?

For the sake of this response, I'm going to assume that your procedure for mapping raw scores into stanines is basically correct. I've spot checked it, but haven't rigorously checked it. The problem ...
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