Linear Regression Analysis
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It attempts to model the relationship between two variables by fitting a linear equation to observe data. One variable is considered to be an explanatory/independent variable, and the other is considered to be a dependent variable.
Linear Regression
It is the slope of the line
b
a or blank is the value of y when x=0
intercept
A linear regression line has an equation in the form of?
Y=a+bX
Used when you want to predict the value of a variable based on the value of another variable, using one independent variable.
Simple Linear Regression
It is the explanatory/independent variable.
X
It is the dependent variable.
Y
formula of b
B=n(Σxy)-(Σx)(Σy) ________________ n(Σx²)-(Σx)²
formula of a
a= (Σy)-b(Σx)/n
Note: What is trying to find is usually the dependent variable.
Y