Correlation Flashcards
3 types of correlations that occur between co-variables
positive
negative
no-correlation
positive correlation?
Both co-variables increase at the same time
Negative correlation
When one co-variable decreases and the other increases
No correlation
When there is no relationship between the co-variables
Correlation coefficient
number between -1 and 1 that tell us how strong the relationship is
strengths of hypothesis
good for starting research
Weaknesses of hypothesis
doesn’t show effect of one variable on another variable
doesn’t show causation
Correlation hypothesis
positive/negative correlation between…(directional)
no/a correlation between…(non-directional)
NEVER USE
effect, cause or difference when describing a correlation