12. Correlations (AS)

Question 1

what is a correlation?

Answer 1

this is an investigation of the association between two or more covariables the results are plotted on a scatter graph

Question 2

what are the three types of correlation?

Answer 2

positive correlation - both rise together
negative correlation - one rises as the other falls
zero correlation - no relationship

Question 3

what’s the difference between an experiment and correlation?

Answer 3

experiment investigating manipulates one variable in order to infer possible effect that variable may have on the other for a correlation there is no manipulation of variables just investigation of associations

Question 4

what are the strengths of correlations?

Answer 4

they are useful starting point for research and thery’re economical

Question 5

what are the limitations of correlations?

Answer 5

the only show associations they do not show causal relationships also the method used to measure either of the variables may be low in reliability or validity