免费在线三次回归计算器，使用最小二乘法快速拟合数据集的三次多项式模型。支持最多30个数据点输入，提供散点图可视化和精确系数计算，适用于数据分析和科学研究。
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"updateDt": 1763061409629,
"hotValue": 0,
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"americaHotValueDouble": 0,
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"selectedValueDouble": 691,
"chinaHotValueDouble": 0,
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"hotValueDouble": 0
}
免费在线t统计量计算器，通过样本均值、总体均值、标准差和样本量精确计算t值。适用于小样本统计检验和未知总体标准差情况，结合p值判断假设检验结果。
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"globalHotValue": 1,
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"hotValue": 0.4,
"todayChainPv": 1,
"todayGlobalPv": 1,
"americaHotValueDouble": 0,
"globalHotValueDouble": 1,
"todayAmericaPv": 0,
"americaHotValue": 0,
"selectedValueDouble": 691,
"chinaHotValueDouble": 1,
"selectedValue": 691,
"chinaHotValue": 1,
"hotValueDouble": 0.4
}
专业点估计计算器，支持最大似然估计、拉普拉斯估计、杰弗里估计和威尔逊估计四种算法。自动选择最优估计结果，适用于统计分析、数据建模等场景，提供精确的参数估计计算。
{
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"updateDt": "2025-11-14 03:16:49",
"hotValue": 0,
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"todayTrailSum": null,
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"selectedValueDouble": 691,
"weekTrailSuccessNumMap": null,
"chinaHotValueDouble": 0,
"selectedValue": 691,
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"chinaHotValue": 0,
"weekTrailNumMap": null
}
