Correlations and types of data

What is a correlation in research?

• A method of manipulating variables

• An analysis of the relationship between co-variables

• A way to establish causation

• A method of collecting qualitative data

In correlational research, how are the variables treated?

• They are manipulated

• They are controlled

• They are measured and compared

• They are ignored

What does a correlation coefficient of 0 indicate?

• A perfect positive correlation

• A perfect negative correlation

• No relationship between co-variables

• A strong positive correlation

Which of the following is a limitation of correlational research?

• It allows for manipulation of variables

• It can establish causation

• Extraneous factors may affect the results

• It is high in reliability

What is the range of values for a correlation coefficient?

• 0 to 1

• -1 to 0

• -1 to +1

• 0 to 100

Which of the following is an example of pre-existing data used in correlational research?

• Number of arguments with your partner in a month

• Average number of hours sleep in one week

• School attendance and number of GCSEs achieved

• Self-reported stress levels

What type of graph is typically used to represent correlations?

• Bar graph

• Line graph

• Scattergraph

• Pie chart

Which of the following describes a negative correlation?

• One co-variable increases as the other increases

• One co-variable increases while the other decreases

• Both co-variables decrease

• There is no change in either co-variable

What is a strength of correlational research?

• It can determine cause and effect

• It allows for predictions to be made

• It is limited to linear relationships

• It requires manipulation of variables

What does a correlation coefficient of -1 indicate?

• A strong positive correlation

• No relationship between co-variables

• A perfect negative correlation

• A perfect positive correlation