11- non-parametric tests

Question 1

define critical value

Answer 1

a numerical value found in the statistical tables that helps determine significance of results

Question 2

what are the conditions for spearman’s rho

Answer 2

• test of relationship/ correlation
• data is ordinal
• data is in related pairs
• non-parametric test

Question 3

what must you remember when doing a spearman’s rho calculation

Answer 3

if you get a negative number ignore the minus when comparing but put it back when reporting the results

Question 4

what are the conditions for Mann Whitney

Answer 4

• test of difference
• data is ordinal/interval
• independent groups design
• non-parametric test

Question 5

what are the conditions for chi squared

Answer 5

• test of association/difference
• data is nominal
• independent measures design
• non-parametric test

Question 6

what are degrees of freedom

Answer 6

the number of degrees of freedom corresponds to the number of values that are free to vary

Question 7

what are the conditions for wilcoxon

Answer 7

• test of difference
• data is ordinal
• repeated measures/ matched participants design
• non-parametric test