サンプルサイズ計算（Sample Size Calculation）は、統計的に有意な結果を得るために、必要なサンプル数を決定する方法 です。適切なサンプルサイズを設定することで、過小なデータによる誤った結論を防ぎ、過剰なデータ収集によるコストを抑える ことができ ...

Power analyses and sample size calculations are important parts of many research projects. Often, before data are even collected, it is necessary to calculate and justify the required sample size for ...

Investigator: Right, here is the data set. What is the P value? Statistician: Oh, hello again. Look, I have some concerns about how the endpoint was assessed... Investigator: Fine, I'll add a sentence ...

Power analyses and sample size calculations are important parts of many research projects. Often, before data are even collected, it is necessary to calculate and justify the required sample size for ...

Choosing the proper sample size for an investigation is one of the crucial jobs required of a statistician. Regardless of whether the statistician is deciding the number of patients to select in a ...