4、假设: 5、MATLAB代码: 三、独立双样本t检验(Independent two-sample t-test) 1、目的: 2、要求: 3、应用举例: 4、假设: 5、注意: 6、MATLAB代码: t检验(t test)又称学生t检验(Student t-test)可以说是统计推断中非常常见的一种检验方法,用于统计量服从正态分布,但方差未知的情况。 有关t检验的历史...
5、MATLAB代码: 二、配对样本t检验(Paired-sample t-test) 1、目的: 2、要求: 3、应用举例: 4、假设: 5、MATLAB代码: 三、独立双样本t检验 (Independent two-sample t-test) 1、目的: 2、要求: 3、应用举例: 4、假设: 5、注意: 6、MATLAB代码: 检验t检验(t test)又称学生t检验(Student t-te...
应用举例: 随机抽取零件检验其规格均值是否等于要求值、健康男子脉搏均数与平均水平比较、高三学生视力水平比较等。假设: 样本均值与已知数相等或不等。MATLAB代码: [h, p, ci, stats] = ttest(x, 'Tail', 'left');二、配对样本t检验(Paired-sample t-test)目的: 检验同一对象在...
单样本t检验用于比较单个样本均值与已知总体均值的显著性差异。假设样本服从正态分布或近似正态分布,样本量超过30时,可以近似认为正态分布。MATLAB代码示例:[公式],默认为双尾检验。配对样本t检验适用于同一组观察对象在不同条件下得到的两组样本,检验它们的均值是否相等。此方法可以看作是将差值视为...
matlab中t-test,两独⽴样本T检验的matlab命令ttest2 ttest2 Hypothesis testing for the difference in means of two samples Syntax[h,significance,ci] = ttest2(x,y)[h,significance,ci] = ttest2(x,y,alpha)[h,significance,ci,stats] = ttest2(x,y,alpha)[...] = ttest2(x,y,alpha,tail)h ...
T-test with Bonferroni Correction (https://www.mathworks.com/matlabcentral/fileexchange/4114-t-test-with-bonferroni-correction), MATLAB Central File Exchange. Retrieved April 7, 2025. MATLAB Release Compatibility Created with R12 Compatible with any release Platform Compatibility Windows macOS Linux...
二:怎么做显著性检验?(基于MATLAB) 显著性检验可以分为参数检验和非参数检验。参数检验要求样本来源于正态总体(服从正态分布),且这些正态总体拥有相同的方差,在这样的基本假定(正态性假定和方差齐性假定)下检验各总体均值是否相等,属于参数检验。 当数据不满足正态性和方差齐性假定时,参数检验可能会给出错误的答案...
Calling on Matlab the function: testt Answer is: FISHER-SNEDECOR F-TEST FOR EQUALITY OF VARIANCES F DF_numerator DF_denominator p_value ___ ___ ___ ___ 1.5379 24 24 0.29861 --- Variances are equal ---
MATLAB Release Compatibility Created with R13 Compatible with any release Platform Compatibility Windows macOS Linux Categories MATLAB > External Language Interfaces > Other languages > Octave Find more on Octave in Help Center and MATLAB Answers ...
is often used to test null-hypotheses while accounting for covariates like age and gender. The idea there is fit linear multiple regression model to data, and then only perform t-tests on regression coefficients corresponding to the variables of interest.