I just wanted to know where I can see my sample size in the output of a linear regression. It must be in the ANOVA-Table in the column of the df. Is my sample size 487?
Residual Error 485
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The Total row of the ANOVA table df column is the size of the sample used (+1 for the constant term, if you have one). You can also include something like
/DESCRIPTIVES MEAN STDDEV CORR SIG N
in the Regression syntax (or check Descriptives in the Statistics subdialog) to see the sample size and other statistics.