How to find MSTR and MSE from SSTR, SSE and df?

MSTR = SSTR / p            OR,    MSTR = SSTR / Df1

MSE = SSE/(n-p-1)         OR,    MSE = SSE / Df2

where p=no. of independent variables or number of x variables; n is total sample size

MSTR and MSE are also available in the SPSS ANOVA output.

Note:

MSTR = SSTR / Df1, in other words: SSTR = MSTR x Df1

MSE = SSE / Df2, in other words: SSE = MSE x Df2