Lecture 15 - Complex Correlations Flashcards
1
Q
What is a Residual
A
Difference between Data Point & Line of Best Fit
Thus, smaller residuals = more accurate model
2
Q
What is the purpose of a Line of Best Fit
A
Aims to reduce the distance between
* the individual data points &
- the line that describes the strength of the relationship
Closer data points are to line = less random variance
3
Q
What is Model Variance
aka Explained Variance
A
Variance explained by the line of best fit
4
Q
What is Random Variance
aka Error & Unexplained variance
A
Variance between line of best fit and raw data
5
Q
How to present correlations according to APA format
A
r (df) = .xx, p < .xxx
r in italics
df = N-2
6
Q
A
