correlations

Question 1

co variables are..

Answer 1

variables investigated within a correlation, try to find a relationship between them

Question 2

positive correlation

Answer 2

as one co variable increases so does another

Question 3

negative correlations

Answer 3

as one co variable increases another decreases

Question 4

zero correlation

Answer 4

no relationship bet variables

Question 5

what is a correlation co effecient r

Answer 5

represents both the strength and direction of the relationship between the co variables as a number between -1 and +1

Question 6

what shows a strong correlation

Answer 6

a correlation co effiecent greater or equal to 0.8

Question 7

correlation co efficient scale

Answer 7

perfect neg -1
strong neg -0.8
mod neg -0.5
weak neg -0.2
no correlation 0
opposite for strong

Question 8

correlation co effiecent tested using

Answer 8

• speramans rho
• inter rater rel
• test retest

Question 9

weakness of correlation

Answer 9

-correlation doesn’t always show causation
- may be a third factor involved
- doesn’t tell us why there is or isn’t a relationship between the co variables

Question 10

strength of correlations

Answer 10

• can highlight potential causal relationships which can then be tested using experimental methods
• quick and economical to carry out using secondary data