改良t检验法

An Improved t Test

提出了一种改良t检验法:改变t检验法的统计量公式,使临界值变成常数。改良t检验法不用查表,适用于n≥4,显著水平α基本固定,还保持了t检验法的检验功效比其它检验法高的优点,广泛适用于未知总体标准偏差σ的情况。

This paper proposed an improved t-test to make the critical value be a constant number by changing the formula of statistic of t-test.The improved t-test requires no table checking and is applicable for any n≥4,with relatively fixed significance level.This method keeps the advantage of t-test,which has higher efficiency than other methods.It can be used for the scenario of unknown population standard deviation.