Behrens-Fisher problem
The process of pattinsonizing.
(heraldry, archaic) In the manner of pales, divided by perpendicular lines.
(chiefly Britain) Any of a series of showers of rain, whose number, location and timing are impossible to predict
(statistics) The problem of interval estimation and hypothesis testing concerning the difference between the means of two normally distributed populations when the variances of the two populations are not assumed to be equal, based on two independent samples.
分散が等しくない2つの臨床試験群の平均を比較する際には、2つの母集団が正規分布し、分散が等しいとは仮定できない場合の平均の差に関する区間推定と仮説検定の問題に対処する必要があり、そうして初めて妥当な結論が得られます。
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