Statistical Tests Flashcards
What is the rhyme to remember the stats test grid
Under red church’s nuns can’t backflip over men without shirts
How did your remember what sign to use
gReateR
If it has an r in its name then is greater than or equal to sign ( apart from the r in wilcoxon signed ranks )
How do you do the binomial sign test
1: data is categorised into a table of results
2: assign a sign to the different flows of direction and then write the sign for each participant (yes—> no= + no—>yes = - )
3: calculate the total for each sign
4: the smallest of the two totals becomes the observed value
5: find the critical value when p<_0.05 and n=__
6: write conclusion/significance statement
How do you do a wilcoxon signed ranks
1:calculate the difference between each individual rating for each condition
2:then rank the differences
3:then calculate the observed value by summing the ranks of the least frequent sign
4:then find the critical value at p<_ 0.05 and n=__
5: see if results are significant
How do you do a Mann Whitney U stats test
1:rank the scores across the 2 conditions
2:find the total of the ranks for both conditions
3:find the total number of participants for both conditions
4:then put the values into the equation
5:use the smaller of u1 and u2 as your observed value
6:find the critical value
7:observed <_ critical
How do you do a spearman’s rho stats test
1:rank each condition separately
2:then calculate the difference between the ranks for each participant
3:square each difference
4:add up all the squares
5:find the value for n
6:put all into equation where Ed2 =step 4
7:find the critical value observed >_ critical