Lesson 4- Correlations

Question 1

What is a correlation?

Answer 1

Technique used for analysing the STRENGTH and DIRECTION of the RELATIONSHIP between two variables

Question 2

What is a POSITIVE CORRELATION?

Answer 2

As one variable increases the other one will also increase

Question 3

What is a negative correlation

Answer 3

As one variable increases the other variable decreases

Question 4

What is the strength of a correlation referred to as?

Answer 4

Correlation coefficient

Question 5

Advantages of correlations

Answer 5

1. Allows strength of a relationship to be established

2.allows researchers to investigate things that could not be manipulated experimentally due to ethical or impractical reasons

Question 6

Disadvantages of correlations

Answer 6

1. Cause and effect cannot be established
2. Correlation only measures LINEAR relationships

Question 7

Difference between correlations and experiments

Answer 7

Experiments establish CAUSE AND EFFECT whereas correlations look for a RELATIONSHIP between co variables