在“独立样本T检验”对话框中,将你想要比较的变量(例如FBG、TG、TC、LDL-C、SUA等)放入“检验变量”(Test Variable)框中。 将用于区分两组的变量(例如一个二分类变量,如性别、治疗组/对照组等)放入“分组变量”(Grouping Variable)框中。 步骤4: 定义组 点击“定义组”(Define Groups)按钮。 在弹出的“定义...
③在“Independent-Sample T-Test(独立样本t检验)”对话框中点击“Define Groups (定义分组)”后出现“Define Groups(定义分组)”子对话框,在该对话框中输入要比较的两组的组别名称。本案在“Group 1(组1)”处输入“1”,“Group 2(组2...
However, before we introduce you to this procedure, you need to understand the different assumptions that your data must meet in order for an independent t-test to give you a valid result. We discuss these assumptions next.Note: If your independent variable has related groups, you will need ...
Defining groups for an Independent-Samples T-Test This feature requires the Statistics Base option. From the menus choose: Analyze>Compare Means>Independent-Samples T Test... Select a grouping variable. Enter the values to define the groups underDefine Groups....
IndependentSamplest-Test(or2-Samplet-Test)AdvancedResearchMethodsinPsychology -lecture- MatthewRockloff 1 Whentousetheindependent samplest-test Theindependentsamplest-testisprobablythesinglemostwidelyusedtestinstatistics.Itisusedtocomparedifferencesbetweenseparategroups.InPsychology,thesegroupsareoftencomposedbyrandomly...
tt--test test (cont.) (cont.) Any differences between groups can be Any differences between groups can be explored with the independent t explored with the independent t--test, as test, as long as the tested members of each long as the tested members of each group are reasonably ...
Quirk, Thomas J.T.J. Quirk et al., Two-Group t-test of the Difference of the Means for Independent Groups. Excel 2007 for Biological and Life Sciences Statistics, 2013: 77-102.
Defining groups for an Independent-samplesttest This feature requires Statistics Base Edition. From the menus choose: Analyze>Group comparison - parametric>Independent-samples t test ClickSelect variableunder theGroup variablesection and select a single grouping variable. The variable can be numeric or ...
When analyzing data for two independent groups (e.g., males vs. females), the Student's t -test is commonly used for normally distributed data measured on a continuous/interval scale (e.g., body mass index). The mathematical formula for ... J Stoltzfus - 《International Journal of Acade...
The independent t-test, also called the two sample t-test, independent-samples t-test or student's t-test, is an inferential statistical test that determines whether there is a statistically significant difference between the means in two unrelated groups....