Correlation

Question 1

What is a correlational analysis?

Answer 1

A technique for analysing data

Question 2

What does a correlation measure?

Answer 2

The strength and direction of a relationship between variables. It is between 0 and 1 and it can be + or -. Therefore it requires quantitative data

Question 3

What are the variables called?

Answer 3

Co-variables

Question 4

What are the three types of correlations?

Answer 4

Positive, negative and zero correlation

Question 5

What is a positive correlation?

Answer 5

As one variable increases the other increases or as one variable decreases the other decreases

Question 6

What is a negative correlation?

Answer 6

As one variable increases the other decreases

Question 7

What is zero correlation?

Answer 7

There is no relationship

Question 8

What is a correlational coefficient?

Answer 8

A numerical measure of the strength of the relationship between two or more variables. It varies between -1 and +1

Question 9

What is a weak correlation?

Answer 9

0-0.3

Question 10

What is a moderate correlation?

Answer 10

0.3-0.7

Question 11

What is a strong correlation?

Answer 11

0.7-1

Question 12

What are two strengths of a correlation?

Answer 12

It can highlight the need for further research and it can be used when other methods are unethical

Question 13

What are two limitations of a correlation?

Answer 13

It is only useful for linear relationships and doesn’t establish the cause and effect

Question 14

What is the difference between a correlation and an experiment?

Answer 14

In an experiment the researcher manipulates the IV to measure the effect on the DV. In a correlation, there is no manipulation of a variable therefore we can’t establish the cause and effect