搜搜考试网SAS 数据分析中的z-score 标准化怎么写
来源：学生作业帮 编辑：搜搜考试网作业帮 分类：数学作业 时间：2024/07/13 02:02:05
SAS 数据分析中的z-score 标准化怎么写
根据公式来,给个例子：
DATA WT;
INPUT WEIGHT;
DATALINES;
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71
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67
55
58
77
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56
51
76
68
;
PROC MEANS NOPRINT DATA=WT;VAR WEIGHT;OUTPUT OUT=WTMEANS
MEAN=WTMEAN STDDEV=WTSD;
RUN;
DATA WTDIFF;SET WT;
IF _N_=1 THEN SET WTMEANS;
DIFF=WEIGHT-WTMEAN;
Z=DIFF/WTSD; * 标准化(Z-SCORE);
RUN;
ODS RTF;
PROC PRINT DATA= WTDIFF;VAR WEIGHT DIFF Z;
RUN;
ODS RTF CLOSE;
DATA WT;
INPUT WEIGHT;
DATALINES;
64
71
53
67
55
58
77
57
56
51
76
68
;
PROC MEANS NOPRINT DATA=WT;VAR WEIGHT;OUTPUT OUT=WTMEANS
MEAN=WTMEAN STDDEV=WTSD;
RUN;
DATA WTDIFF;SET WT;
IF _N_=1 THEN SET WTMEANS;
DIFF=WEIGHT-WTMEAN;
Z=DIFF/WTSD; * 标准化(Z-SCORE);
RUN;
ODS RTF;
PROC PRINT DATA= WTDIFF;VAR WEIGHT DIFF Z;
RUN;
ODS RTF CLOSE;