{"id":2547,"date":"2023-11-17T09:00:00","date_gmt":"2023-11-17T01:00:00","guid":{"rendered":"https:\/\/\/?p=2547"},"modified":"2023-11-12T12:42:57","modified_gmt":"2023-11-12T04:42:57","slug":"3a%e5%a8%9b%e6%a8%82%e5%9f%8e%e7%99%be%e5%ae%b6%e6%a8%82%e7%9a%84%e6%95%b8%e5%ad%b8%e9%ad%94%e6%b3%95%ef%bc%9a3%e5%a4%a7%e4%b8%8b%e6%b3%a8%e7%ad%96%e7%95%a5%e5%85%ac%e9%96%8b","status":"publish","type":"post","link":"https:\/\/\/3a%e5%a8%9b%e6%a8%82%e5%9f%8e%e7%99%be%e5%ae%b6%e6%a8%82%e7%9a%84%e6%95%b8%e5%ad%b8%e9%ad%94%e6%b3%95%ef%bc%9a3%e5%a4%a7%e4%b8%8b%e6%b3%a8%e7%ad%96%e7%95%a5%e5%85%ac%e9%96%8b\/","title":{"rendered":"3A\u5a1b\u6a02\u57ce\u767e\u5bb6\u6a02\u7684\u6578\u5b78\u9b54\u6cd5\uff1a3\u5927\u4e0b\u6ce8\u7b56\u7565\u516c\u958b"},"content":{"rendered":"\n

\u767e\u5bb6\u6a02\u4e0b\u6ce8\u7b56\u7565 \u6578\u5b78\u6982\u5ff5<\/h2>\n\n\n\n

1. \u671f\u671b\u503c\uff1a \u671f\u671b\u503c\u662f\u4e00\u500b\u95dc\u9375\u7684\u6578\u5b78\u6982\u5ff5\uff0c\u7528\u65bc\u8a55\u4f30\u8ced\u535a\u904a\u6232\u4e2d\u7684\u5229\u6f64\u548c\u640d\u5931\u3002\u5728\u767e\u5bb6\u6a02\u4e2d\uff0c\u671f\u671b\u503c\u8868\u793a\u4e00\u500b\u7279\u5b9a\u4e0b\u6ce8\u7684\u9810\u671f\u5e73\u5747\u503c\u3002\u5b83\u7684\u8a08\u7b97\u65b9\u5f0f\u662f\u5c07\u6bcf\u7a2e\u53ef\u80fd\u7684\u7d50\u679c\u7684\u6982\u7387\u4e58\u4ee5\u5c0d\u61c9\u7684\u7372\u5229\u6216\u8667\u640d\uff0c\u7136\u5f8c\u5c07\u9019\u4e9b\u503c\u76f8\u52a0\u3002\u5982\u679c\u671f\u671b\u503c\u70ba\u6b63\uff0c\u5247\u8868\u793a\u4e0b\u6ce8\u662f\u6709\u5229\u7684\u3002<\/p>\n\n\n\n

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\"\"<\/figure>\nIn probability theory, the expected value (also called expectation, expectancy, expectation operator, mathematical expectation, mean, average, or first moment) is a generalization of the weighted average. Informally, the expected value is the arithmetic mean of a large number of independently selected outcomes of a random variable.

The expected value of a random variable with a finite number of outcomes is a weighted average of all possible outcomes. In the case of a continuum of possible outcomes, the expectation is defined by integration. In the axiomatic foundation for probability provided by measure theory, the expectation is given by Lebesgue integration. (\u8cc7\u6599\u4f86\u6e90<\/a> )<\/cite><\/blockquote>\n\n\n\n

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2. \u8ce0\u7387\uff1a \u8ce0\u7387\u662f\u8868\u793a\u4e0b\u6ce8\u7684\u6f5b\u5728\u56de\u5831\u7684\u65b9\u5f0f\uff0c\u901a\u5e38\u4ee5\u6bd4\u4f8b\u6216\u5206\u6578\u7684\u5f62\u5f0f\u8868\u793a\u3002\u5728\u767e\u5bb6\u6a02\u4e2d\uff0c\u4e0d\u540c\u4e0b\u6ce8\u9078\u64c7\u6709\u4e0d\u540c\u7684\u8ce0\u7387\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u4e0b\u6ce8\u9592\u5bb6\u4e26\u8d0f\u4e86\uff0c\u5247\u8ce0\u7387\u901a\u5e38\u70ba1:1\uff0c\u5373\u8ced\u6ce8\u52a0\u4e0a\u7b49\u984d\u734e\u91d1\u3002\u838a\u5bb6\u4e0b\u6ce8\u7684\u8ce0\u7387\u901a\u5e38\u70ba1:1\uff0c\u4f46\u9700\u652f\u4ed8\u4f63\u91d1\u3002\u548c\u5c40\u7684\u8ce0\u7387\u8f03\u9ad8\uff0c\u901a\u5e38\u70ba8:1\u62169:1\uff0c\u4f46\u548c\u5c40\u7684\u6a5f\u6703\u8f03\u4f4e\u3002 <\/p>\n\n\n\n

3. \u52dd\u7387\uff1a \u52dd\u7387\u662f\u6307\u5728\u4e00\u500b\u7279\u5b9a\u4e0b\u6ce8\u9078\u64c7\u4e0a\u8d0f\u5f97\u7684\u6a5f\u6703\u3002\u5b83\u53ef\u4ee5\u901a\u904e\u8a08\u7b97\u7279\u5b9a\u9078\u64c7\u7684\u7372\u52dd\u6982\u7387\u4f86\u8861\u91cf\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u4e0b\u6ce8\u9592\u5bb6\uff0c\u5247\u60a8\u7684\u52dd\u7387\u662f\u6839\u64da\u9592\u5bb6\u5728\u904e\u53bb\u7684\u5c40\u6578\u4e2d\u7372\u52dd\u7684\u6b21\u6578\u4f86\u8a08\u7b97\u7684\u3002\u52dd\u7387\u8d8a\u9ad8\uff0c\u60a8\u8d0f\u5f97\u8a72\u4e0b\u6ce8\u7684\u6a5f\u6703\u5c31\u8d8a\u5927\u3002<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u7d71\u8a08\u5206\u6790\u8207\u4e0b\u6ce8\u7b56\u7565<\/h2>\n\n\n\n

\u7d71\u8a08\u5206\u6790\u5728\u8a55\u4f30\u4e0b\u6ce8\u7b56\u7565\u7684\u512a\u52a3\u65b9\u9762\u767c\u63ee\u8457\u95dc\u9375\u4f5c\u7528\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u7d71\u8a08\u65b9\u6cd5\uff0c\u53ef\u7528\u65bc\u8a55\u4f30\u548c\u512a\u5316\u60a8\u7684\u767e\u5bb6\u6a02\u4e0b\u6ce8\u7b56\u7565\uff1a <\/p>\n\n\n\n

1. \u6b77\u53f2\u6578\u64da\u5206\u6790\uff1a \u901a\u904e\u6536\u96c6\u548c\u5206\u6790\u904e\u53bb\u7684\u904a\u6232\u7d50\u679c\uff0c\u53ef\u4ee5\u8a08\u7b97\u51fa\u4e0d\u540c\u4e0b\u6ce8\u9078\u64c7\u7684\u52dd\u7387\u548c\u671f\u671b\u503c\u3002\u9019\u53ef\u4ee5\u5e6b\u52a9\u60a8\u4e86\u89e3\u54ea\u4e9b\u9078\u64c7\u5728\u904e\u53bb\u8868\u73fe\u8f03\u597d\uff0c\u4f46\u61c9\u8b39\u614e\u5c0d\u5f85\uff0c\u56e0\u70ba\u904e\u53bb\u7684\u7d50\u679c\u4e0d\u4e00\u5b9a\u80fd\u9810\u6e2c\u672a\u4f86\u3002 <\/p>\n\n\n\n

2. \u6a21\u64ec\u548c\u7b56\u7565\u6e2c\u8a66\uff1a \u4f7f\u7528\u7d71\u8a08\u6a21\u578b\u548c\u6a21\u64ec\uff0c\u60a8\u53ef\u4ee5\u6a21\u64ec\u4e0d\u540c\u4e0b\u6ce8\u7b56\u7565\u7684\u6548\u679c\u3002\u901a\u904e\u5927\u91cf\u6a21\u64ec\u904a\u6232\uff0c\u60a8\u53ef\u4ee5\u8a55\u4f30\u4e0d\u540c\u7b56\u7565\u5728\u9577\u671f\u5167\u7684\u8868\u73fe\uff0c\u4e26\u627e\u5230\u6700\u9069\u5408\u60a8\u98a8\u96aa\u627f\u53d7\u80fd\u529b\u7684\u7b56\u7565\u3002 <\/p>\n\n\n\n

3. \u8cc7\u672c\u7ba1\u7406\uff1a \u7d71\u8a08\u5206\u6790\u9084\u53ef\u4ee5\u5e6b\u52a9\u60a8\u5236\u5b9a\u9069\u7576\u7684\u8cc7\u672c\u7ba1\u7406\u7b56\u7565\uff0c\u4ee5\u78ba\u4fdd\u60a8\u7684\u8ced\u6ce8\u5728\u4e0d\u540c\u98a8\u96aa\u6c34\u5e73\u4e0b\u4fdd\u6301\u7a69\u5b9a\u3002\u9019\u5305\u62ec\u8a2d\u5b9a\u8ced\u6ce8\u9650\u5236\uff0c\u78ba\u4fdd\u60a8\u4e0d\u6703\u904e\u5ea6\u640d\u5931\u3002<\/p>\n\n\n\n

\n
\"\"<\/figure>\nStatistics (from German: Statistik, orig. “description of a state, a country”) is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data. In applying statistics to a scientific, industrial, or social problem, it is conventional to begin with a statistical population or a statistical model to be studied.

Populations can be diverse groups of people or objects such as “all people living in a country” or “every atom composing a crystal”. Statistics deals with every aspect of data, including the planning of data collection in terms of the design of surveys and experiments. (\u8cc7\u6599\u4f86\u6e90<\/a>)<\/cite><\/blockquote>\n\n\n\n

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3A<\/a>\u5a1b\u6a02\u57ce\u7d50\u8ad6<\/h2>\n\n\n\n

\u767e\u5bb6\u6a02\u662f\u4e00\u500b\u878d\u5408\u904b\u6c23\u3001\u6578\u5b78\u548c\u7d71\u8a08\u5b78\u7684\u5a1b\u6a02\u904a\u6232\u3002\u7406\u89e3\u6578\u5b78\u6982\u5ff5\u5982\u671f\u671b\u503c\u3001\u8ce0\u7387\u548c\u52dd\u7387\uff0c\u4ee5\u53ca\u904b\u7528\u7d71\u8a08\u5206\u6790\u4f86\u8a55\u4f30\u4e0b\u6ce8\u7b56\u7565\uff0c\u5c07\u5e6b\u52a9\u60a8\u5728\u904a\u6232\u4e2d\u5236\u5b9a\u66f4\u660e\u667a\u7684\u6c7a\u7b56\u3002\u7136\u800c\uff0c\u8acb\u8b39\u8a18\uff0c\u767e\u5bb6\u6a02\u4ecd\u7136\u662f\u4e00\u500b\u5a1b\u6a02\u904a\u6232\uff0c\u52dd\u6557\u4e0d\u4e00\u5b9a\u53ef\u9810\u6e2c\u3002\u8b39\u614e\u548c\u7406\u6027\u7684\u904a\u6232\u65b9\u5f0f\u624d\u662f\u9577\u671f\u5167\u4fdd\u6301\u6a02\u8da3\u548c\u63a7\u5236\u98a8\u96aa\u7684\u95dc\u9375\u3002<\/p>\n\n\n\n

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\u5ef6\u4f38\u95b1\u8b80: \u73a9\u5bb6\u5fc5\u8b803\u500b\u5fc3\u7406\u79d8\u8a23\uff01\u6253\u6557\u7126\u616e\uff0c\u52dd\u51fa\u904a\u6232\uff01<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

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