correlation research

Question 1

what is correlation

Answer 1

describe the relationship between 2 variables in statistical terms

Question 2

what is a positive correlation

Answer 2

describes a relationship in which both variables increase togther

Question 3

what is a negative correlation

Answer 3

describes a relationship in which both variables increases and the other decreases

Question 4

what is a co-efficient

Answer 4

strength of a correlation

Question 5

what does a -1.0 and a +1.0 correlation mean

Answer 5

it is a perfectly a positive and negative correlation

Question 6

what is a weak correlation

Answer 6

0.0-0.3

Question 7

what is a moderate correlation

Answer 7

0.3-0.7

Question 8

what is a strong correlation

Answer 8

0.7-1.0

Question 9

what graphs are used in correlation research

Answer 9

scattergraphs

Question 10

give 3 strengths of correlations

Answer 10

investigate unethical situations

standardised procedure (often use a questionnaires)

leads to new research

Question 11

give 3 weaknesses of correlations

Answer 11

cannot infer cause and effect

use secondary data

the self-report may lack validity

Question 12

give an example of study that used correlational analysis

Answer 12

Li et al

there was a positive correlation between heroin use and activity in the PCC, used fMRI scans