correlation

Question 1

define correalational techniques

Answer 1

• used to measure how strong the relationship is between two (or more) variables.
• positive, negative,no

Question 2

correlation coefficient

Answer 2

A correlation coefficient is used to measure the strength and nature (positive or negative) of the relationship between two co‐variables.
- A perfect positive correlation has a correlation coefficient of +1 and for a perfect negative
correlation it is ‐1.

Question 3

strengths of correlational techniques

Answer 3

1. Can be used when a laboratory experiment would be unethical as the variables are not manipulated, only correlated.
2. Measure the strength of a relationship between variables, allowing for further research to be conducted.

Question 4

limitations of correlational techniques

Answer 4

1. Not possible to establish cause and effect
   relationships through conducting a correlation. = other factors affecting results
2. Can only identify linear relationships and not
   curvilinear.