Study design, program evaluation, statistical analysis, AI evaluation, and working with statisticians.
Logins and minutes show an AI tutor was used. Whether students learned needs an outcome they complete without it, and a comparison chosen in advance.
CONSORT, SPIRIT, JARS-Quant, SAMPL, TRIPOD+AI, BARG and ADEMP: what each reporting guideline is for, what they share, and how to stack them.
In 1936, 2.4 million people mailed back a poll that called the election for the wrong man. The problem wasn't who got a ballot. It was who sent one back.
Losing a third of your participants can be fine. Losing a tenth can sink the evaluation. What matters is who left, and whether they left evenly.
Small schools topped the test-score rankings, and foundations put billions behind them. Small schools also crowded the bottom of the rankings.
Percent agreement and correlation can look excellent when raters barely agree. How to choose between Cohen's kappa, Krippendorff's alpha, and the ICC.
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