stats sem 2

Question 1

parametric testing common assumptions:

Answer 1

pop should be normally distributed

variances should be approximately equal

no extreme scores

Question 2

4) Assuming the samples from populations A & B represent paired variables for a group of nA = nB = n individuals, a Pearson’s r test of correlation between variables. df=

Answer 2

n-2

Question 3

A 1-sample t-test to assess whether the mean of the sample from population A is different to some hypothetical value muH. df =

Answer 3

nA -1