Correlations

Question 1

Correlation

Answer 1

a mathematical technique in which a researcher investigates an association between two variables, called co-variables

Question 2

Co-variables

Answer 2

the variables investigated within a correlation e.g. height and weight.
not referred to as the independent and dependent variables because a correlation investigates the association between the variables, rather than trying to show a cause and effect relationship

Question 3

Positive correlation

Answer 3

as one co-variable increases so does the other.

Question 4

Negative correlation

Answer 4

as one co-variable increases the other decreases

Question 5

zero correlation

Answer 5

when there is no relationship between the co-variables

Question 6

Difference between correlations and experiments

Answer 6

Experiment : researcher controls or manipulates the IV in order to measure the effect on the DV. As a result of this deliberate change in one variable it is possible to infer that the IV caused any observed changes in the DV

Correlation: no such manipulation of one variable and therefore it is not possible to establish cause and effect between one co-variable and another