Correlations

Question 1

What is a correlation?

Answer 1

Where a researcher investigated a association/relationship between two variables

Question 2

What are correlations plotted on?

Answer 2

scattergrams

Question 3

Define a Positive Correlation

Answer 3

As one co-variable increases so does the other

Question 4

Define a Negative Correlation

Answer 4

As one co-variable increases, the other increases

Question 5

What is a ‘Zero Correlation’?

Answer 5

When there is no relationship between the two co variables

Question 6

What are the strengths of Correlations?

Answer 6

• Provide a precise and quantifiable measure
• Quick and economical
• Act as a starting point for further research

Question 7

What are the limitations of Correlations?

Answer 7

• Does not establish cause and direction of effect
• There might be a Third Variable Problem
• Can be misused and misinterpreted

Question 8

What is a Correlation Coefficient?

Answer 8

A number between -1 and +1 that represents the direction and strength of a relationship

Question 9

What does +1 represent?

Answer 9

A Perfect Positive Correlation

Question 10

What does -1 represent?

Answer 10

A Perfect negative correlation

Question 11

When is a correlation strong?

Answer 11

When the coefficient is closer to -1 or +1