Tests Flashcards
1
Q
Sign
A
test for difference, repeated measures, nominal
- if any participant had same score we leave them
- score 1 - score 2 = +/-
- count total + or -
- find which is the lowest = observed value
- compare OV to CV
- if participant removed (earlier on) take them off n value
- if OV can be =< CV
2
Q
Wilcoxon
A
test for difference, repeated measures, ordinal
- score 1 - score 2
- rank numbers from lowest to nighest ignoring the sign
- count how many + and - signs there are
- add the ranks up of the least frequent sign
- calculate the n value (number of difference)
- compare to the CV table and write the significant statement .
3
Q
Mann Whitney
A
- Rank all of the data of one big group
- Add up all of the ranks for group 1 to get the value of R1
- Repeat the same procedure to get R2 for group 2
- Use the formula given
- use smallest total value given for this
- Use the critical value table to find if it is significant
- write the significance statement
4
Q
Spearman’s Rho Test
A
- rank each co-variable separately
- calculate the difference ; rank 1 - rank 2
- calculate the square of the difference to eliminate the negative
- find the sum of the difference squared column
- write the significance statement
5
Q
Chi-Squared
A
- collect results and perform analysis and get totals of columns and rows
- numbers in the cell box are the ov
- calculate the expected frequencies = (row total) x (column total) / total of all cells
- apply the formula
x^2 = the sum of (O-E)^2 / E
