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OCR: DF records an associated degrees of freedom (DF) for each source error. The Total Error DF is the degrees of freedom found on the Error line of the corresponding Analysis of Loglikelihood table the difference between the Total DF and Model DF found in that ta The error are partitioned into degrees of freedom for lack and for pure error The Pure Error DF is pooled from each group where there are multiple rows with the same values for each effect. In general, if there are groups having multiple rows with identical values for each effect, the pooled DE denoted DFp written, DF p (ni (r-1) wheren i is the number of subiects in the ith group, and r is the number of response levels The Lack Fit DF the difference between the Total Error ans Pure Error degrees of freedom. pooleo