Data Shanghai;
Input CPI@@;
Time=intnx('year','1jan1954'd, _n_+1);
Format time year4.;
Cards;
102.1
100.8
100.6
100.8
101.5
101.8
101.8
101.2
101
100.9
100.92
101.3
100.9
101.3
102.2
102
101.8
102.7
102.7
103.9
104.5
105.08
105.2
105.4
105.9
107.5
107.2
107.9
107.1
107.1
107.1
105.5
104.8
104.1
103.6
102.1
101.7
99.8
99.6
98.6
98.8
98.5
98.1
99.4
99.5
99.7
100.2
101.2
101.1
101.3
102.1
102.6
103.2
103.2
103.9
103.2
103.77
104.1
104.3
104.51
;
Proc gplot;
Plot CPI*time;
Symbol c=black v=star i=join;
run
;
得到这个图形,请教高手如何使其平稳化



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