Correlations

Question 1

What stats test do we use for a correlation?

Answer 1

Spearmans Rho

Question 2

What do we call the number that represents the strength and direction of a correlation?

Answer 2

Correlation co-efficient

Question 3

A correlation can be between what two numbers?

Answer 3

-1 and 1

Question 4

Can a correlation identify a cause and effect relationship and why?

Answer 4

No - it just shows the relationship as there is no manipulation of the variables

Question 5

What do we call the variables in a correlation?

Answer 5

co-variables

Question 6

what type of graph shows a correlation?

Answer 6

scatter graph

Question 7

Give two strengths of correlations

Answer 7

Examples:
- no manipulation so more ethical
- quantitative data so easy to statistically analyse

Question 8

Give two weaknesses of correlations

Answer 8

Examples:
- quantitative data lacks depth and detail
- can’t get a cause and effect relationship so don’t know if one variable impacts the other - less valid