两独立样本率（构成比）比较实际频数理论频数组别阳性数阴性数合计阳性数阴性数合计铅中毒病例2973618.7397260317.2602739736对照组9283719.2602739717.7397260337合计383573383573估计值P值自由度检验水准临界值Pearson卡方23.11700.000001524410.053.84连续性校正20.91880.0000047917两独立样本率（构成比）比较实际频数理论频数组别阳性数阴性数合计阳性数阴性数合计铅中毒病例2973618.7397260317.2602739736对照组9283719.2602739717.7397260337合计383573383573估计值P值自由度检验水准临界值Pearson卡方23.11700.000001524410.053.84连续性校正20.91880.0000047917四格表配对资料的卡方检验实际频数+-合计b+c+452267-6202628合计514293估计值P值卡方9.14290.0024969089自由度检验水准临界值校正卡方8.03570.004586392110.053.842×3表资料的卡方检验实际频数理论频数组别列1列2列3合计列1列2列3合计行163084415.1923.055.7644行2231434013.8120.955.2440合计2944118429441184卡方值计算表组别列1列2列3合计行15.56042.09720.86938.5269检验结果行26.11642.30690.95639.3796卡方值P值检验水准自由度临界值列联系数合计11.67684.40411.825617.906617.90660.00012931270.0525.990.41922×4表资料的卡方检验实际频数理论频数组别列1列2列3列4合计列1列2列3列4合计行15048187218887.5132.7414.1153.63134.3663664行21051072314567.4925.2610.8941.37103.6336336合计155582595333155582595238卡方值计算表组别列1列2列3列4合计行116.07657.10721.06996.289430.5429检验结果行220.84409.21481.38718.154539.6005卡方值P值检验水准自由度临界值列联系数合计36.920516.32202.457014.443970.143470.14343.97695E-150.0537.810.47713×2表资料的卡方检验实际频数理论频数列1列2合计列1列2合计行16232915.1913.8129行230144423.0520.9544行383115.765.2411合计444084444084卡方值计算表列1列2合计行15.56046.116411.6768行22.09722.30694.4041检验结果行30.86930.95631.8256卡方值P值检验水准自由度临界值列联系数合计8.52699.379617.906617.90660.0001290.0525.990.41923×3表资料的卡方检验实际频数理论频数列1列2列3合计列1列2列3合计行1431881424524.90149.8970.21245行21967216917.17103.3948.43169行361755787.9347.7222.3578合计5030114149250301141492卡方值计算表列1列2列3合计行113.16039.690645.004967.8558行215.23300.528511.467527.2291检验结果行30.468419.775747.678367.9224卡方值P值检验水准自由度临界值列联系数合计28.861629.9949104.1507163.0072163.00723.3106E-340.0549.490.49893×4表资料的卡方检验实际频数理论频数列1列2列3列4合计列1列2列3列4合计行111215020540507171.98122.73165.8546.44507行220011213573520176.39125.88170.1147.63520行336221931069960325.64232.39314.0487.93960合计67448165018219876744816501821987卡方值计算表列1列2列3列4合计行120.91696.05869.24000.892837.1083行23.16121.53017.245013.513825.4501检验结果行34.06060.77160.05204.07598.9602卡方值P值检验水准自由度临界值列联系数合计28.13888.360316.537018.482571.518671.51861.99511E-130.05612.590.18644×3表资料的卡方检验实际频数理论频数列1列2列3合计列1列2列3合计行1112200362674171.98176.39325.64674行2150112219481122.73125.88232.39481行3205135310650165.85170.11314.04650行440736918246.4447.6387.93182合计50752096019875075209601987卡方值计算表列1列2列3合计行120.91693.16124.060628.1388行26.05861.53010.77168.3603行39.24007.24500.052016.5370检验结果行40.892813.51384.075918.4825卡方值P值检验水准自由度临界值列联系数合计37.108325.45018.960271.518671.51861.99511E-130.05612.590.18644×4表资料的卡方检验实际频数理论频数列1列2列3列4合计列1列2列3列4合计行111215020540507170.83122.88165.0948.20507行220011213573520175.21126.03169.3249.44520行3101111114314.4910.4214.004.0943行436221931069960323.47232.67312.5991.27960合计68449266119320306844926611932030卡方值计算表列1列2列3列4合计行120.26065.98609.64961.395837.2921行23.50691.56186.956511.229123.2543行31.39060.03210.643411.685713.7518检验结果行44.59000.80310.02155.434310.8489卡方值P值检验水准自由度临界值列联系数合计29.74818.383017.271029.744985.147185.14711.52475E-140.05916.920.2006
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