Multiple regression Flashcards
1
Q
What is a linear regression?
A
Where there is one continuous predictor variable
2
Q
What is B0?
A
The intercept, where the line meets the Y axis
3
Q
What is B1?
A
The slope, the angle of the regression line
4
Q
What is the equation for regression as a predictive tool?
A
Y = B0 + (B1 * X) + (any other predictors)
5
Q
What are zero order correlations?
A
Whether there are significant correlations between each individual predictor variable and the outcome
6
Q
What is the adjusted R squared?
A
the amount of variance explained by the overall model
7
Q
What does the B value tell you??
A
Whether the direction is positive or negative
8
Q
How do you analyse binary variables?
A
- The difference between the two groups are always going to be the same
- Regression tells you if the difference from one group to the other is a significant predictor of the outcome
9
Q
What does the direction of the relationship depend on? (binary)
A
Depends on the order of coding
