What Is the Difference Between a Blocking Variable and a Covariate

question 12

Multiple Choice

What is the difference between a blocking variable and a covariate?

• A) Blocking variables result in main effects whereas covariates do not.
• B) Blocking variables are manipulated variables, but covariates are simply measured.
• C) Blocking variables are categorical variables and covariates are continuous variables.
• D) Blocking variables are used to statistically control for variance due to that variable, whereas covariates represent multiple independent variables and are the focus of the main effects in an experiment.

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