if the test statistic is less than the critical value, there is a more than 5% probability that the difference is due to chance so you accept the null, we can conclude that there is no significant difference
if the test statistic is greater than the critical value, there is a less than 5% probability that the difference is due to chance so you reject the null, we can conclude that there is a significant difference
when do you use a paired t-test?
Comparing means of two sets of data from the sameindividuals:
groups must be the same size
what does d- represent?
the mean of the differences between each pair of measurements
when do you use spearmans rank?
measuring the correlation between two variables --> measures the strength and direction (+ or -) of the correlation
what does d² represent?
difference between the ranks
when do you use the unpaired t-test?
comparing the means of 2 sets of data from differentindividuals - groups don't need to be the same size
