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1. \u7b97\u672f\u5e73\u5747\u503c\uff0c\u53c8\u79f0\u6837\u672c\u5747\u503c\uff1aX X= \u2014 \u03a3xi \u5f0f\u4e2d\uff1an\u2014\u2014\u70b9\u6837\u54c1\u6570\uff08\u6837\u672c\u5927\u5c0f\uff09 Xi\u2014\u2014\u7b2ci\u4e2a\u6837\u54c1\u6d4b\u5f97\u7684\u53c2\u6570\u3002\u5982\u8d28\u91cf\u3001\u542b\u6c34\u91cf\u3001\u9897\u7c92\u6570\u7b49\u3002<\/p>\n

2. \u65b9\u5dee\uff1a\u03c32 \u03c32 = \u2014\u2014 \u03a3\uff08Xi \u2014 X\uff092<\/p>\n

3. \u6807\u51c6\u504f\u5dee\uff0c\u53c8\u79f0SD\uff08Standard Deviation\u7684\u7f29\u5199\uff09\uff1a\u03c3 \u03c3=\u221a\u03c32 =\u221a\u2014\u2014\u03a3\uff08Xi \u2013 X\uff092 \u572820\u4e16\u7eaa40\u5e74\u4ee3\u4ee5\u524d\uff0c\u4e00\u76f4\u7528\u03c3\u6765\u5b9a\u4e49\uff08\u8bc4\u4f30\uff09\u7c89\u4f53\u6df7\u5408\u8d28\u91cf\uff0c\u03c3\u503c\u8d8a\u5c0f\uff0c\u6df7\u5408\u8d8a\u5747\u5300\u3002\u7136\u800c\uff0c\u5b9e\u8df5\u8868\u660e\uff0c\u8fd9\u4e00\u5b9a\u4e49\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u5f88\u4e0d\u7cbe\u786e\uff0c\u8bef\u5dee\u8f83\u5927\u3002\u82f1\u56fd\u7c89\u4f53\u5de5\u7a0b\u6743\u5a01N.\u54c8\u6069\u8d1d\u5728\u5176\u4e13\u8457\u201c\u5de5\u4e1a\u4e2d\u7684\u6df7\u5408\u8fc7\u7a0b\u201d\uff08\u4e2d\u56fd\u77f3\u5316\u51fa\u7248\u793e1991\uff09\u8bf4\u8fc7\u8fd9\u6837\u4e00\u53e5\u8bdd\uff1a\u201c\u2026\u2026\u7531\u6837\u54c1\u4e2d\u5f97\u5230\u7684\u5b9e\u8df5\u65b9\u5dee \uff08\u03c32\uff09\u6570\u503c\u6ca1\u6709\u591a\u5927\u4ef7\u503c\uff0c\u9664\u975e\u4e0e\u6781\u9650\u65b9\u5dee\u503c\u53ef\u4ee5\u5173\u8054\u201d\u3002<\/p>\n

4. \u76f8\u5bf9\u6807\u51c6\u504f\u5dee\uff0c\u53c8\u79f0RSD\uff08Relative Standard Deviatio\uff09\uff1aV V\u6709\u5f88\u591a\u79cd\u7b97\u6cd5\uff0c\u4ee5\u4e0b\u4ec5\u63d0\u4f9b2\u4e2a\u5e38\u7528\u7b97\u6cd5\u3002 \u3000 \u7b97\u6cd51\uff1aV= \u00d7100% \u7b97\u6cd52\uff1aV= \uff08\u00d7100%\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"

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