Regression Methods
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11 Terms
What is simple linear regression?
a statistical method for studying the relationship between two quantitative variables
What are the two variables in linear regression?
the independent variable, dependent variable
What is the independent variable?
The predictor, the value that affects the other
What is the dependent variable?
The response, the value that is affected by the other
What is a deterministic relationship?
a relationship where an equation exactly describes the variables
What is a statistical relationship?
a relationship between variables that is not perfect
What are some signs of a statistical relationship in a scatterplot?
trend and scatter
What is the goal of a best-fitting line?
To summarize the trend in the data
What does yₙ mean?
observed response for unit n
What does xₙ mean?
predictor value for unit n
What does ŷₙ mean?
predicted response for unit n