平均值置信区间的公式表示

Formula representation for the confidence interval of the average value

4个常用 p值的 t分布分位数 ,可用 4个简单的公式表示 .用于国际标准和国家标准的平均值置信区间的表示中 ,不用查表 ,非常方便 ,误差也很小 .在 n=3,置信区间所产生的置信概率误差 ΔP<0 .1 6 ;n≥4 ,Δp<0 .1 .

The four regular t distribution fractiles valued at WTBXp can be indicated by four simple formulas,which are table check free,easy to use and of small tolerance for representing the mean confidence interval at both international and national standards.When n=3,the confidence interval generates the probable error as △p≤0.16%,when n≥4,△p<0.1%.