哪位时间序列分析方面的大神,帮我建一个AR（P)模型,

哪位时间序列分析方面的大神,帮我建一个AR（P)模型,
时间序列A=[0.6337,-0.1415,2.6863,0.7659,0.0905,1.5765,4.1232,5.8021,0.1650,1.6288,3.6476,-0.7237,-4.7569,-5.6606,-2.8512,-2.3948,-3.7381,-0.8529,-10.3476,-13.2583,-12.9010,-11.2548,-4.2177],间隔为1个月.拟合一个AR模型,用BIC准则求最佳阶数P,给出待估参数,拟合值及Q统计量.