Correlations

Question 1

what are correlations?

Answer 1

measurement of two co-variables and compared to look for a relationship

Question 2

what is the correlation coefficient?

Answer 2

the number that shows the strength and direction of the relationship between two co-variables

Question 3

what number is a perfect correlation

Answer 3

+/- 1

Question 4

what number is a strong correlation

Answer 4

-/+0.9

Question 5

what number is a weak correlation

Answer 5

-/+0.5

Question 6

what number is no correlation

Answer 6

0

Question 7

advantages of correlation

Answer 7

• researchers can identify if there is a link before conducting an experiment
• few ethical problems in data collection as co-variables data already exists

Question 8

disadvantages of correlation

Answer 8

• doesn’t show causation and effect between 2 co-variables

Question 9

how is correlation presented

Answer 9

Using scattergraph