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Can you have more than 1 dependent variable?
The dependent variable responds to the independent variable. It is called dependent because it “depends” on the independent variable. In a scientific experiment, you cannot have a dependent variable without an independent variable. There may be more than one dependent variable and/or independent variable.
How many independent variables should there be in an experiment?
ONE independent variable
To insure a fair test, a good experiment has only ONE independent variable. As the scientist changes the independent variable, he or she records the data that they collect. The dependent variable is the item that responds to the change of the independent variable.
What is the difference between a dependent and an independent variable?
In analytical health research there are generally two types of variables. Independent variables are what we expect will influence dependent variables. A Dependent variable is what happens as a result of the independent variable.
What is a reason for doing an experiment with more than one independent variable?
Just as including multiple dependent variables in the same experiment allows one to answer more research questions, so too does including multiple independent variables in the same experiment.
What happens when there are multiple dependent variables in a GLM?
In a ordinary GLM, there is a single dependent variable, and the prediction errors have a mean of 0 and a variance that can be computed after the GLM is fitted. When there are multiple dependent variables, there will be prediction errors for each of the dependent variables.
Is the one-way ANOVA part of the GLM family?
However, since the One-Way ANOVA is also part of the General Linear Model (GLM) family of statistical tests, it can also be conducted via the Univariate GLM procedure (“univariate” refers to one dependent variable).
What happens when you have two dependent variables?
When there are multiple dependent variables, there will be prediction errors for each of the dependent variables. In the example above, there are two dependent variables, Area1 and Area2, so there will be prediction errors for Area1 and also prediction errors for Area2.
What should the independent variable be in SPSS?
The independent variable should be categorical (nominal or ordinal) and include at least two groups, and the dependent variable should be continuous (i.e., interval or ratio). Each row of the dataset should represent a unique subject or experimental unit.
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