Correlations Flashcards
1
Q
When do we use correlations?
A
we use correlations when we want to know how two variables are related to each other.
2
Q
What is the co-efficient for correlation?
A
(r) - value which measures the strength of the relationship between two variables
3
Q
What is symbol for positive correlations?
A
(/) - values increase in the same direction
4
Q
What is the symbol for negative correlations
A
values increase in opposite directions
5
Q
What are the values of r?
A
.10 - .39 - weak
.40 - .69 - moderate
.70 - 1.00 - strong
6
Q
What are scatterplots?
A
Try to draw an imaginary line through the center of the data
X axis/ Y axis - different variables
7
Q
What is null correlation?
A
This means no relationship
8
Q
A
