用EVIEWS对月度数据进行季度调整（census -x12)的样本数据是不是不能为负值啊？谢谢！
\u8bf7\u6559\u7528eviews\u505acensusX12\u5b63\u8282\u8c03\u6574\u4ee5\u53ca\u8fdb\u884c\u5e73\u51cf\u5904\u7406\u7684\u5177\u4f53\u6b65\u9aa4\uff0c\u6025\uff0c\u8dea\u8c22\uff01\u4f60\u53ef\u4ee5\u53c2\u8003\u9ad8\u94c1\u6885\u7684\u8ba1\u91cf\u7ecf\u6d4e\u5206\u6790\u65b9\u6cd5\u4e0e\u5efa\u6a21\uff0c\u90a3\u4e0a\u9762\u6709\u5f88\u5177\u4f53\u7684\u6b65\u9aa4\uff0c\u6bd4\u8f83\u9002\u5408\u521d\u5b66\u8005\u7684
\u76f8\u5173\u7cfb\u6570\u539f\u672c\u5c31\u53ef\u4ee5\u662f\u8d1f\u6570
Census X12季节调整方法是在X11方法的基础上发展而来的,包括X11季节调整方法的全部功能,并且对X11方法做了改进。Census X12方法除了加法模型以外的其他模型不允许序列数据中存在零和负数绛旓細1.鎵撳紑鍘熷骞村害鏁版嵁搴忓垪锛堝亣璁惧悕绉颁负GDP锛夛紝鍗曞嚮properties/Datas & Frequ Conversion 2.鍦╨ow to high frequency conversion method 涓夋嫨鑷繁鍚堥傜殑杞鏂规硶,鐐筼k銆3.閫変腑骞村害鏁版嵁搴忓垪GDP锛屽彸閿塩opy銆4.鍦ㄥ悓涓涓Eviews绐楀彛涓缓绔嬩竴涓柊鐨剋orkfile锛屾暟鎹鐜囨敼涓哄搴︺傚湪鏂皐orkfile涓,鍙抽敭閫塸aste锛...
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