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1、人们到医院就诊时，通常要化验一些指标来协助医生的诊断。诊断就诊人员是否患肾炎时通常要化验人体内各种元素的含量。表1给出了确诊病例的化验结果，其中130号病例是已经确诊为肾炎病人的化验结果；31-60号病例是已经确定为健康人的结果，表2是就诊人员的化验结果。问题是：1. 根据表1数据，提出一种或多种简便的判别方法，判别属于患者或健康人的方法，并检验提出方法的正确性。2. 按照1提出的方法，对表2中30名就诊人员的化验结果进行判别，判定他（她）们是肾炎病人还是健康人。3. 根据表1的数据特征，确定哪些指标是影响人们患肾炎的关键或主要因素，以便减少化验指标。4. 根据3的结果，重复2的工作。表一 Z
2、n Cu Fe Ca Mg K Na16615.824.570011217951318515.731.57011251844271939.825.954116312864215914.239.789699.223972622616.223.860615270.32181719.299.2930718745.525720113.326.655110149.414114714.5306591021546801728.857.8655175.798.431815611.532.563910710355213215.917.757892.41314137218211.311.3767111264672
3、1869.2637.1958233733471628.2327.162510862.44651506.632162714017963915910.711.761219098.539011716.17.0498895.513657218110.14.04143718410154214620.723.81232128150109242.310.39.762993.743988828.212.453.137044.145485215413.853.362110516072317912.217.9113915045.221813.53.3616.813532.651.61821755.8424.980
4、712355.612611315.847.362653.616862750.511.66.360858.958.913978.614.69.742170.8133464903.278.1762252.377085217828.832.499211270.216921319.136.222202494016817013.929.8128522647.933016213.219.8152116636.21332031390.8154416298.939416713.114.1227821246.313416412.918.6299319736.394.51671527205626064.62371
5、5814.437102510144.672.513322.8311633401180899156135322674710902288101698308106899.15328924717.38.65255424177.93731668.162.812332521346492096.4386.92157288742191826.4961.7387043214336723515.623.4180616668.818817319.117249729565.828715119.764.2203140318287419165.435536139213768822324.486360335397.7479
6、22120.115531723681507392172528.2234337311049416422.235.522122811535491738.9936162421610325720218.617.737852253167.318217.324.8307324650.71092112417383642873.535124621.593.2211235471.719516416.138213515264.32401792135156022647.9330表二 Zn Cu Fe Ca Mg K Na58.25.4229.73231381795131061.8740.55421771844271
7、520.812.5133217612864685.51.73.9950362.3238762.61440.715.154779.771218.585.71.094.279017045.8257.91440.39.1141755249.5141.51704.169.32943260155680.81760.5727.331813399.4318.81927.0632.919693431035531888.2822.61208231131413721535.8734.8328163264672.51432.8415.726512373347.521319.136.2222024962465.819
8、220.123.816061564016817110.530.567214547330.516213.219.8152116636.21332031390.8154416298.9394.516420.128.9106216147.3134.516713.114.1227821236.596.516412.918.6299319765.5237.81671527205626044.87215814.4371025101180899.513322.831.31633401228289169830.8106899.15381724717.38.65255424177.5373.51853.931.31211190134649.82096.4386.9215728874219.81826.4961.73870432143367.523515.623.4180616668.9188
