O、P、T、 H 各代表什么意思_百度知道 O、P、T、 H 各代表什么意思这些是同性恋中区分角色的用语，不过都是中国的同性恋用语，国外是没有这些区分的。 其中PTH是女同性恋当中的角色，而0是男同性恋当中的角色（是数字0，而不是字母O） T:即为女同性恋当
Determining When to Use a z-Distribution or a t-Distribution Learn how to determine when to use a z-Distribution or a t-Distribution, and see examples that walk through sample problems step-by-step for you to improve your statistics knowledge and skills
t-Test | Definition, Formula Calculation - Lesson | Study. com The t-score formula for an independent t-test is: t equals the mean of population 1 minus the mean of population 2 divided by the product of the pooled standard deviation and the square root of