5-4 The Paired t-Test OPTIONS NOOVP NODATE NONUMBER ls=80;

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5-4 The Paired t-Test OPTIONS NOOVP NODATE NONUMBER ls=80; DATA INSURE; INPUT FIRST SECOND @@; DIFF=FIRST-SECOND; IF DIFF < 0 THEN IND=1; ELSE IND=0; ABSDIFF=ABS(DIFF); CARDS; 165 139 156 132 165 134 135 133 134 130 131 133 130 130 126 125 120 122 120 119 118 114 115 116 108 105 ods graphics on; PROC UNIVARIATE DATA=INSURE NORMAL PLOT; VAR DIFF; TITLE ‘Wilcoxon Signed Rank Test and t-test'; PROC RANK DATA=INSURE OUT=RINSURE; VAR ABSDIFF; DATA RINSURE; SET RINSURE; IF IND=1THEN ABSDIFF=-ABSDIFF; PROC UNIVARIATE DATA=RINSURE normal; TITLE 'Wilcoxon Signed Ranks Test'; RUN; ods graphics off; QUIT;

5-4 The Paired t-Test

5-4 The Paired t-Test

5-4 The Paired t-Test