ttest，即 t tests (mean-comparison tests)简单来说，在t检验的假设都满足的前提下 比如满足正态分布啊 比如同方差假定啊 比较不同的数据的均值，判断数据之间是否存在差异 主要有以下几种情形：1、单样本t检验 命令：ttest var = 假设值，即检验样本的均值是否显著不同于某假设值 2、单样本（配对差异）t检验...
The t-test is a test that compares means. NHST can be conducted yielding to a p-value Effect Size can be calculated like in multiple regression. Confidence Interval around the mean can also be reported T-tests: t-test (single sample) t-test (dependent) t-test (independent) Th...
statistics->Summaries,tables,and tests->Classical tests of hypotheses->t test (mean-comparison test) ttest price==6000//默认置信区间95ttest price==6000,level(99)ttest pric==6000ifforeign==0,level(90) 假设price等于6000 由于Pr(|T|>|t|) = 0.6313 mean !=6000 所以不能拒绝mean==6000的原假...
选择参数检验：检验回归（regression）、比较（comparison）或相关（correlation）三种关系。参数检验通常比非...
All data representations are x ± s. Application of SPSS11.5 software packages, group design different from the t tests, mean comparisons univariate analysis; used an f-test for variance analysis (ANOVA), q test further on more than one sample mean comparison between 22. ...
若想进一步了解哪些两个总体均数不等,需进行多个样本均数间的两两比较或称多重比较(multiplecomparison)。也叫posthoc检验,q-检验法(newman-keulstest,nk)用于对多个样本均数每两个作比较,其检验统计量为:,例,为研究钙离子对体重的影响作用,某研究者将36只肥胖模型大白鼠随机分为三组,每组12只,分别给予高脂正常...
2 依次点击“Statistics”→“Summaries tables, and tests”→“classical tests hypotheses”→“one-sample mean-comparison test”，弹出ttest窗口。3 将“variable name”设置为步骤一输入的样本变量a，在Hypothesized mean文本窗口输入总体均数34，点击OK，则出现结果页面。4 从结果可知，当备择假设为Ha: mean≠34...
The analysis tool is SPSS 13.0; statistical method is mean comparison and independent sample t test. 主要采用的分析工具是SPSS13.0, 采用的统计方法是均值比较法和独立样本t检验法. 互联网 展开全部 行业词典 农学 t检验 化学 t检验 医学 t检验
依次点击“Statistics”→“Summaries tables, and tests”→“classical tests hypotheses”→“mean-comparison test, paired test”后,弹出ttest窗口,将“First variable”设置为pre样本变量,将“Second variable”设置为post样本变量,点击OK。 第三步:结果输出与解读 结果输出:从结果可知,当备择假设为Ha: mean(diff...
The usual goal is to determine if at least one group mean (or median) is different from the others. Often follow-up multiple comparison tests are used to determine where the differences occur. The One-Way Analysis of Variance procedure in NCSS can be used to perform a one-way (single-...