what is chi squared used for ?
see if there is a significant difference between observed and expected data
how do you calculate degrees of freedom for chi squared test
df = n-1
what is spearmand rank used for?
see if there is a significant correlation between 2 sets of data
how do you calculate degrees of freedom for spearans rank?
df = n
what is t test used for?
see if there is a significant difference between the mean of 2 groups
how do you calculate degrees of freedom for t test
df = (n1+n2) -2
what is the pired t test used for?
see if there is a significant difference between two groups of data from the same individual
how do you calculate the degrees of freedom for the paired t test
df= n-1