Correlations Flashcards
(9 cards)
what are the three types of correlation
positive
negative
zero
what type of graph do correlations use
scatter graph
what do correlations measure
co variables
what is a positive correlation
as one variable increases so does the other
what is a negative correlation
as one variable increase the other decreases
what is a zero correlation
there is no relationship between variables
strength of correlation
-variables occur naturally that cannot be measured experimentally such as the size of someone’s head and intelligence can be investigated which cannot be done in an experiment
-these normally high levels of ecological validity as participants are in their normal environment
weakness of correlation
-it is difficult to establish cause and effect between variables. Just because they’re correlated does not mean that one causes the other
-there are issues with construct validity as this mainly uses quantitative data as we may not measure something accurately