correlations Flashcards
What are correlations?
Represent the strength and direction of an association between two or more co variables. They are plotted in a scatter gram, with one co variable represented on each axis.
What is a positive crrelation?
One co variable increases, so does the other.
What is a negative correlation?
One co variable increases, the other decreases.
What is a zero correlation?
No relationship between the co variables.
What is a strength of using correlations?
Quick to carry out and there is no need for a controlled environment.
No variables need to be controlled.
Data is secondary, which means they are less time-consuming than experiments.
What is a limitation of using correlations?
Tell us how and no why the correlation exists - limited.
Correlations can be misinterpreted for true facts, when that may not always be the case.
