L4

Question 1

Positive correlation

Answer 1

One variable increases other variables increase

Question 2

Negative correlation

Answer 2

One variable increases other variables decrease

Question 3

No correlation

Answer 3

No relationship between the two variables

Question 4

Correlation evaluation

Answer 4

(+) establish strength of relationship between two variables
(+) investigate things that can’t be manipulated experimentally
(+) once correlation has been conducted predictions can be made
(-) can’t demonstrate cause and effect
(-) may not be correlation between two variables but a third unknown influences both
(-) doesn’t detect curvilinear relationships