Correlations

Question 1

What are correlations used for

Answer 1

To analyse the strength of the relationship between 2 quantitative variables, Co-variables

Question 2

How can data for a correlation test be obtained

Answer 2

Non experimental sources. E.g. survey

Question 3

What can the strength of a correlation be between

Answer 3

-1 and +1

Question 4

Adv of correlations

Answer 4

• allows establishment of strength of the relationship between 2 variables and measure if precisely
• allows researchers to investigate things that could not be manipulated for ethical or practical reasons
• predictions can be made about one of the variables based on what is known abt the other variable

Question 5

Disadv of correlations

Answer 5

• cause and effect cannot be established, can’t tell which one I fluemces the other
• even if there is a correlation it might be that the variables are not acc related and it’s instead due to confounding variables
• correlation only measures linear rs not curvilinear where at one it goes from posit e to negative