What is a correlational study?
is an example of non experimental studies
What are other non experimental study?
interviews
questionaries
correlational studies
case studies
observations
What does a correlational study look at?
Looks at two sets of data and measures the relationship between them and not the cause and effect.
Cant measure the variables
What is a scattergram?
A type of graph that represents the strength and direction of the relationship between co - variables in a correlation analysis
What is a positive correlation?
As one co variable increases so does the other
What is negative correlation?
As one co variable increases the other decreases
What is zero correlation?
There is no relationship between the co variable
What is a strength of correlational studies?
Usefulness : You can see how two things are related together
Then design experiments to find out why
Correlations can provide the basis for further research
What is the weaknesses of correlational studies?
Low internal validity : cant establish cause and effect as a third factor may have caused both
- confounding variables : These variables have an effect on the variables which decrease the validity
- Can’t tell which one came first : direction of causality