Tests

Question 1

Wilcoxon

Answer 1

find difference between scores,
rank difference ( find middle)
add up rank if positive and rank if negative and use the smaller value
that’s ur T
if calculated value of T is less than critical value at 5% for one tailed test then it’s significant

Question 2

Mann-Whitney U test

Question 3

Spearman’s rank?
When do u use it
how

Answer 3

correlational study

Question 4

correlational study

Answer 4

relationship between two variables
- not experiments , no IV or DV just co variables
uses spearman’s rank
we put the data into scatter graph
investigates strength and direction, strength is expressed by correlation coefficient

Question 5

correlation coefficient

Answer 5

expressed between -1 and +1
closer to -1(perfect negative correlation)
closer to +1(perfect positive correlation)
correlation with 0 means no correlation

Question 6

Spearman’s rho- equation

Answer 6

1- 6 sum of D2/n(n2-1)

Question 7

spearman’s rho -ranking

Answer 7

rank columns separately

Question 8

spearman’s conclusion

Answer 8

if it’s close to 1 there is a strong + correlation
close to -1 strong - correlation
( one tailed look at 0.05)
must be equal to or bigger to be sig
as calculated r value is greater than/ equal to the critical value the correlation is significant