Describing Distributions (2 variables) Flashcards
1
Q
What is the equation of the LSRL?
A
ŷ=a+bx
2
Q
What does “ŷ” mean?
A
Predicted value/outcome
3
Q
What does “a” represent in the LSRL equation?
A
When x=0, that is the value of y (y-intercept).
4
Q
What does “b” represent in the LSRL and interpret this value.
A
“b” is the slope, and it is how much y changes by per x-value.
5
Q
What is the equation to find “a”?
A
a=(mean of y values)-(b)(mean of x values)
6
Q
What is the equation to find “b”?
A
b=r(Sy/Sx)
