whats a positive correlation
the line is going upawards in a positive line, all dots joined up
If one co-variable increases so does the other!
define correlation
Correlations are examining how two, un-manipulated co-variables interact with each other.
Correlations study the relationship between the variables.
define negative correlation
If one co-variable increases the other decreases
lines going down
define no correlation
If there is no relationship between the co-variables
whats operationalisng variables
2 co-variables you must ensure you operationalise both as quantitative data that is either ordinal or interval/ratio level data so it can be placed on a scatter graph.
whats an alternative 1 tailed correlation
There will be a significant positive/negative correlation between co-variable x and co-variable y.
whats a null corrleation hyptohesis
There will not be a significant correlation between x and y; any relationship will be due to chance factors.
whats an alternative 2 tailed corrleation
There will be a significant correlation between co-variable x and co-variable y.
whats a co variable
one of the factors your looking for a relationship between
whats corrleation co officient
scale showing numbers to determine conclusion of the graph
positives of correlation
-reveal new information by analysing the relationship between already existing data.
-used when variables cannot be manipulated for practical or ethical reasons
-starting point for research and lead to further investigation.
weaknesses of correlation
Correlations do not tell us about cause and effect.
Cannot collect qualitative data
Which type of correlation involves one variable increasing as the other variable also increases?
