2018年1月7日 · data have2; input n line $50.; datalines; 30 doidn 31 fifeniofe 32 doewiij 33 fofugrugr 34 text jdjdjf stock IBM 35 djdff 36 25$ 37 fg fgg 38 computers 39 text jdjdjf stock AAA 40 djdff 41 22$ 42 fggh 43 food 44 text jdjdjf stock BBB 45 djdff 46 55$ 47 duehuefhu 48 automotive 49 dfeoufeijer 50 ierhde43848 ; run;

2018年1月7日 · selecting observations based on their relative position to other ... ... Sign In

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