Dependent and independent
Conceptual variables are variables that are used as the basis of a hypothesis in experiments. Conceptual variables are abstract, as opposed to the concretely defined variables used in the experiment.
I think it has to do with the quasi you cannot randomly assign people to groups and cannot infer causality. With correlational you are simply examine the relationship between two nominal variables.
observation, survey, case study, or experiment
one example would be if the participants had mental issues, or behavior disorders.
Correlation refers to the extent to which two variables relate to one another. This is often referred to in scientific studies.
There are three types of variables tested: manipulated variables, controlled variables, and experimental variables.
The two types of variables are the CONSTANT and CONTROL.
hypothesis
nominal and ordinal is wrong; those are the two types of qualitative variables. Ratio and interval are the two types of quantitative variables.
Qualitative and quanitative are two types of variables.
Most science experiments will have two independent variables. Fundamentally, an experiment will want as few variables as possible for better results.
You need to control the variables because if you have two or more variables in an experiment you will never know which variable caused a change or not caused a change.
have no variables
manipulated variableresponding variablecontrolled variable
hypothesis
Variables that do not change in an experiment are independent variables.
Variables that do not change in an experiment are independent variables.