Correlation Predictions Flashcards
1
Q
How do you when a p-value is significant?
A
p
2
Q
You use data x-values with the range only, when?
A
extrapolating
3
Q
What is variability?
A
how spread out measurements are
4
Q
What is Residual Error?
A
Error between actual and predicted residuals
5
Q
What is the equation for Standard Error of the Estimate?
A
SEe = SQRT ___(y-Yp)^2+(y-Yp)^2+…(etc.)____
N-2
6
Q
When finding Standard Error of the Estimate, what is “y and what is “YP”?
A
y= measured value YP = predicted from best-fit line ( point on line)
7
Q
What is Interpretation?
A
Standard Deviation of all the residuals made when predicting Y and X
8
Q
What is the difference between Standard Error of the Mean(SEm) & Standard Error of the Estimate(SEe)?
A
SEm = Predicting value of population from sample mean SEe = Prediction value of Y from value of X
9
Q
If residuals Y-Yp are normally distributed, what is this called?
A
homoscedastic
10
Q
What is the equation to find Prediction Intervals (Yp)?
A
Yp = a + b(x) +/- Z (SEe)
