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科学者、研究者、医師、学生向けです。
独立した2群の平均値に差があるかどうかについて、unpaired t-test (Student t-test)とWelch's t-testを行います。これらは分散検定により自動的に最適な検定が選択されます。また2群の平均値の差について、信頼区間を計算します。

まず2群の分散に差があるかどうかを調べ、差がなければ t-test (Student t-test)を、あればWelch's t-testを自動で選別して平均値の差の危険率Pを計算します。信頼区間も計算されます。デフォルトでは、分散の差の危険率は0.1、信頼区間は0.95としています。両群あわせて500個までの数字まで対応しています。

A tool of statistics for scientists, doctors, researchers, students, etc.
This App handles unpaired t-test and Welch's t-test, that are automatically selected by variance comparison test. The confidence intervals of the difference of two averages are also provided.

This is a useful test for the comparison of mean for two independent groups.
At first, the variance (=standard deviation^2 = SD^2) of the data are tested. If the variance of the groups are not different, t-test (Student t-test) is applied automatically. If different, Welch's t-test is applied. When P value is less than 0.05, the averages of two groups are different. When P value is equal or more than 0.05, the averages are not different. If you like to know the confidence intervals of the mean difference, adjust the control bar. By default, variance criteria = 0.1, confidence interval=0.95. The total number of elements should not be over 500.

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For iOS 10.0

Yasunari Miyagi, MDのアプリ一覧