Correlations Flashcards
Why are correlations used?
They are used to see if there is a relationship between two co-variables
What data do correlations gather?
Quantitative data- easy analysis and comparison to other findings, considered objective so no researcher bias
How can correlations be represented and why?
Scatter graphs make it easier to analyse if there is a relationship between the two co-variables
What does a positive correlation suggest?
As one co-variable increases the other co-variable also increases
What does a negative correlation suggest?
As one co-variable increases the other co-variable decreases
although correlation may indicate a relationship between co-variables it does not look for differences and therefore it is not possible to establish causality.
May also be affected by a 3rd variable problem which affects the other co-variables
What are strong positive correlations?
0.7, 0 8, 0.9, and 1
What are strong negative correlations?
-0.7, -0.8, -0.9, and -1
What is a moderate positive correlation?
0.4, 0.5, and 0.6
What is a moderate negative correlation?
-0.4, -0.5, and -0.6
What is a weak positive correlation?
0.1, 0.2, and 0.3
what is a weak negative correlation?
-0.1, -0.2, and -0.3
What is no correlation?
0
Good starting point for preliminary research
able to investigate relationships that are unethical