Correlations

Question 1

Correlation about

Answer 1

• aim to find relationship between two things
• direction and strength indicated by correlation coefficient +1 to -1
•scatter graph

Question 2

Types of correlation

Answer 2

•positive- both go in same direction as one increases so does the other
+1 is a strong positive
•negative- travel in opposite directions as one increases the other decreases
-1 is strong negative
•no correlation- no relationship

Question 3

Evaluation of correlations

Answer 3

•provide insight into research for future
• can be used when an experiment would be unethical so give an estimate of result using secondary data
•can’t establish cause and effect