Seminar 1 Flashcards
What is a correlation?
How we establish how two or more co-variables are related.
If something happens to X what happens to Y.
How do we measure correlation?
Scatterplots
Correlation coefficient
P-value
What so scatterplots tell us?
Visually show us the relationship between X and Y
What do correlation coefficients tell us?
(Pearson’s r) is a value between -1 to 1, which tells us information of both the strength and the direction of the relationship
What does the p-value . tell us?
Whether the relationship is significant or not significant.
What is a perfect positive correlation?
r= 1
What is a perfect negative correlation?
r = -1
What is a null correlation?
r =0
When X increases, Y shows no consistent change
There is no relationship
What is a small correlation?
r > .10
What is a medium correlation?
r > .30
What is a large correlation?
r > .50
What is mediation?
The intervening variable represents a ‘bridge’ that explains how predictor outcome (i.e., mechanism)
What is full mediation?
When the direct effect is not significant
What is partial mediation?
When the direct effect remains significant
What is moderation?
Represents a switch. Explains when a predictor influences outcome and when not . (interaction).
It affects . the strength and direction of impact on Y.
