stats tests Flashcards
(8 cards)
1
Q
what is chi squared used for ?
A
see if there is a significant difference between observed and expected data
2
Q
how do you calculate degrees of freedom for chi squared test
A
df = n-1
3
Q
what is spearmand rank used for?
A
see if there is a significant correlation between 2 sets of data
4
Q
how do you calculate degrees of freedom for spearans rank?
A
df = n
5
Q
what is t test used for?
A
see if there is a significant difference between the mean of 2 groups
6
Q
how do you calculate degrees of freedom for t test
A
df = (n1-n2) -2
7
Q
what is the pired t test used for?
A
see if there is a significant difference between two groups of data from the same individual
8
Q
how do you calculate the degrees of freedom for the paired t test
A
df= n-1
