Correlations Flashcards
Define correlation
A relationship between 2 variables
Define correlational design
A way to test a relationship between 2 variables
What are the two variables being tested called?
Co-variables
What are the 5 types of correlation?
- Positive
- Strong positive
- Negative
- Strong negative
- No correlation
What is the mathematical value for a correlation called?
A coefficient
What is the measurement for a coefficient
-1.00 to +1.00
What does - represent?
A negative correlation
What does + represent?
A positive correlation
How does a coefficient show a correlation?
The higher the number, the stronger the correlation (whether it be negative or positive)
What does a value of 0.00 mean?
There is no relationship between the variables
What does a value of +1.00 mean?
- A perfect positive correlation
- E.G. The more you work, the more money you get
What does a value of -1.00 mean?
- A perfect negative correlation
- E.G. The more money you spend, the less you have
What are the features of a correlational hypothesis?
- No manipulation of variables
- Operationalise both variables
- There will be a relationship (non-directional)
- There will be a positive/negative relationship (directional)
What does correlation not equal?
CAUSATION
Define a third variable
A variable which could cause a relationship between two unrelated variables