why do anova contrast tests use k degree of freedom why do we use degrees of freedom for a contrast testing? why do we use degrees of freedom for anova test why do spss contrast tests use n-k why do we instead use degrees of freedom in anavar tests? why do contrast tests have degrees of freedom? why do we need to use degrees of freedom in anova contrast why do we use n k degrees of freedom which spss table uses degrees of freedom in an anova test why do we use degrees of freedom for analyses why do we use degrees of freedom why do we use degrees of freedom in ananov why do the degrees of freedom for a spm test vary? why do we use n degrees of freedom what is the purpose of the degrees of freedom in an anova test? why do we add k degrees of freedom to the anova why do we use degrees of freedom why do asovs use n-k degrees what is the degrees of freedom in anavar what test uses the in-between ss degrees of freedom?