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A line that slopes downward from left to right has a
Degrees Of Freedom
A parameter of the t distribution. When the t distribution is used in the computation of an interval estimate of a population mean, the appropriate t distribution has n − 1 degrees of freedom, where n is the size of the sample.
Observations
Individual data points or recorded measures from a study or experiment.
Independent Variables
Factors in a model or experiment that are deliberately altered to study their impacts on outcome variables.
Collinearity
A statistical phenomenon where two or more predictor variables in a multiple regression model are highly correlated, making it difficult to isolate the individual effects of each predictor.
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