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Basics of Regression Analysis
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Where is the Least-Square Regression Line placed on the scatterplot?
Where is the Least-Square Regression Line placed on the scatterplot?
In a scatterplot, the Least-Square regression line is placed among the data where the least amount of error between the average predicted value and observed value is obtained.
What does the Least-Square Regression Line aim to describe and what is it used for?
What does the Least-Square Regression Line aim to describe and what is it used for?
The average relationship between the dependent (y values) and independent (x values) variables in a scatterplot. It is used for predicting values on the y-axis with the given value on the x-axis.
What is the Slope (b1) in a Regression Analysis?
What is the Slope (b1) in a Regression Analysis?
The amount of how much the predicted y-values will increase or decrease for every 1 given x-value unit.
What is the Intercept (b0) in a Regression Analysis?
What is the Intercept (b0) in a Regression Analysis?
The y-value of the dependent variable where the regression line touches the y-axis with an x-value of 0
What does the SSM calculate in a Regression Analysis?
What does the SSM calculate in a Regression Analysis?
Sum of the Explainable Data. It is the amount of variance between the predictability in a relationship between x and y & no relationship. → the BIGGER the SSM the stronger the predictability of the data relationship.
What does SSM or SSR Stand for
What does SSM or SSR Stand for
Sum of Squared Model or Sum of Squared Regression.
What does SST stand for in Regression Analysis?
What does SST stand for in Regression Analysis?
Sum of Squared Total
What does DFM stand for? And what is the amount of the df?
What does DFM stand for? And what is the amount of the df?
Degrees of freedom Model
df = p
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