correlations

Question 1

correlations

Answer 1

A correlation is plotted on a scattergram and tells us the strength and direction of a relationship between two or more co-variables.

Question 2

types of correlation

Answer 2

Positive (two variables rise or fall together) or negative (one variable rises and the other falls).
Zero correlation is when there is no relationship between the variables

Question 3

strength of correlations

Answer 3

useful preliminary tool for research. by assessing strenght and direction of a relationship, provide precise quantifiable measure.
helps inform future research, used as starting point.

quick and economical to carry out, no need for controlled environment, data collected by others, less time.

Question 4

correlations vs experiments

Answer 4

No IV or DV in a correlation (just co-variables).
Cause-and-effect relationships cannot be established.

Question 5

limitations of correlations

Answer 5

dont explain why variables are related, no cause and effect relationship, dk which variable is the cause. establishing direction is issue.

could be intervening variable casuing relationship, third V problem.

can be misused or misinterpreted, sometimes presented as casual when they aren’t esp by the media.

Question 6

correlation coefficient

Answer 6

Number between –1 and +1 that indicates the strength and direction of correlation.

Question 7

how are correlations analysed

Answer 7

statistical tests