Correlation

Question 1

What is correlation

Answer 1

Method used to assesss the degree to which two co-variables are related

Question 2

Types of correlation

Answer 2

Positive
negative
No corelation

Question 3

Positive correlation

Answer 3

Two co-variables increase together

Question 4

Negative correlation

Answer 4

One co-variable increases as the other decreases

Question 5

Strengths

Answer 5

Looks at relationships between continuous co-variables (experiments look at differences)
Useful for preliminary analysis of data (weak correlation = no casual link, strong correlation = correlation justified

Question 6

weaknesses

Answer 6

-Cannot shows cause and effect relationship
-Impossible to know direction of any casual relationship
-Intervening variables may explain why co-variables are linked
-Method used to measure co-variable may lack reliability