What does a correlation illustrate?
The strengths and direction of association between 2 or more co-variables
What type of graph are correlations shown on?
Scatter graph
What is a positive correlation?
As one co-variable increases, the other co-variable also increases
What is a negative correlation?
As one co-variable increases, the other co-variable decreases
What are 2 strengths of using correlations?
1) Assesses the strength of a relationship
2) Quick and economical to carry out
What are 2 weaknesses of using correlations?
1) Cannot demonstrate cause and effect
2) Can be misinterpreted and used to people’s advantages