Application of Statistics

Question 1

how many groups are being compared

Answer 1

if 1- 2= t test

if more than 2= ANOVA

Question 2

T test, paired and independent

Answer 2

paired: within group comparison before and after tx
independent: two diff. groups, 1 group got the control and one group got the intervention, comparing scores of different groups after each

Question 3

ANOVA

Answer 3

post-hoc analysis needed

Question 4

correlation

Answer 4

R= simple, there is a relationship but can’t determine cause/effect

Question 5

regression

Answer 5

Rsquared= complicated, able to identify “contributing factors” not necessarily the cause but can say it contributed significantly

Question 6

parametric tests are used when

Answer 6

when there are normative data values, nice bell curve, nicely and evenly distributed values
independent t tests
paired t tests
pearson’s correlation

Question 7

non parametric tests are…

Answer 7

when there are no norms, no normal shaped bell curve, not evenly distributed, or super small groups
Mann Whitney U= independent T test
Wilcoxon Signed rank test= paired t test
Spearman’s rho= pearson’s correlation