卫生统计学卫生统计学 (40).docx
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1、填空题1.观察A、B两种镇痛药物等剂量在产妇分娩中的效果,镇痛时间与相关统计分析结果如 下。请问两种药物的镇痛效果是否相同?此题的资料类型为表1两种药物在分娩中的镇痛时间(min) VA药物100125113115109145132115128127B药物124143155138115159125136115118Tests of Normality组别Kolmogorov-Smirnov3Shapiro-WilkStatisticdfSig.StatisticdfSig.镇痛时间阳物.17510,200x.97510.929B药物.18710.200x.91210.297a. Lillief
2、ors Significance Correction*. This is a lower bound of the true significance.Test of Homogeneity of VarianceLevene Statisticdf1df2Sig.镇痛时间Based on Mean.812118.379Based on Median.762118.394Based on Median and.762117.628.394with adjusted dfBased on trimmed mean.810118.380Group Statistics组别NMeanStd. De
3、viationStd. Error Mean镇痛时间物B药物1010120.90132.8012.99116.0264.1085.068Independent Samples TestLevenes Test for Equality of Variancest-test for Equality of MeansFSig.IdfSig. (2-tailed)Mean DifferenceStd. Error Difference95% Confidence Inteival of the DifferenceLowerUpper枕扃时间Equal variancesassumed.812.3
4、791,82418,08511,9006.52425.6061.806Equal variances not assumed-1.82417,261,08611,9006.524-25.6481.848填空题Hypothesis Test SummaryNull HypothesisTestSig. DecisionIndependent- Samples Mann- Whitney U TestRetain the .212 null hypothesis.1 The distribution of 体重变化 is the same across categories of 分组.Asymp
5、totic significances are displayed. The significance level is .05.判断题10.研究高糖饲料和普通饲料对家兔体重的关系,随机抽取20只家兔进行实验,结果见表1。 问两种饲料饲养效果有无差别? 此题高糖组所增体重均数为2.655,普通组所增体重均数为1.890,因此可以认为高糖组所增体重高于普通组所增体重,高糖饲料的饲养效果较好()表1两种饲料喂养家兔体重变化。饲料2个月内各家兔所增体重(kg)高精2.54.91.50.058.11.11.32.42.91.8普通2.21.22.50.17.81.01.22.10.50.3Tests
6、of Normality分组Kolmogorov-Smirnov3Shapiro-WilkStatisticdfSig.StatisticdfSig.体重变化高糖组,25810.058.84310.048普通组.29210.015.70910.001a. Lilliefors Significance CorrectionTest of Homogeneity of VarianceLevene Statisticdf1df2Sig.体重变化 Based on MeanBased on MedianBased on Median and with adjusted dfBased on tri
7、mmed mean.060.080.080.0461111181817,87818.809.780.780.833Hypothesis Test SummaryNull HypothesisTestSig. DecisionIndependent- Samples Mann- Whitney U TestRetain the .212 null hypothesis.1 The distribution of 体重变化 is the same across categories of 分组.Asymptotic significances are displayed. The signific
8、ance level is .05.判断题11 .研究高糖饲料和普通饲料对家兔体重的关系,随机抽取20只家兔进行实验,结果见表1。 问两种饲料饲养效果有无差别?此题假设检验结果P=0.212,说明高糖组与普通组两种饲料的饲养效果无差别()表1两种饲料喂养家兔体重变化d饲料2个月内各家兔所增体重(kg)高精2.54.91.50.058.11.11.32.42.91.8普通2.21.22.50.17.81.01.22.10.50.3Tests of Normality分组Kolmogorov-Smirnov3Shapiro-WilkStatisticdfSig.StatisticdfSig.体重变
9、化高糖组.25810.058.84310.048普通组.29210.01570910.001a. Lilliefors Significance CorrectionTest of Homogeneity of VarianceLevene Statisticdf1df2Sig.体重变化 Based on MeanBased on MedianBased on Median and with adjusted dfBased on trimmed mean.060.080.080.0461111181817.87818.809780.780.833Hypothesis Test Summary
10、Null HypothesisTestSig. DecisionIndependent- Samples Mann- Whitney U TestRetain the .212 null hypothesis.The distribution of 体重变化 is the same across categories of 分组.Asymptotic significances are displayed. The significance level is .05.单选题12 .两样本均数比较,经佥验,差别有统计学意义时,P越小,说明()A.两总体均数差别越大B.两总体均数差别越小C.越有理
11、由认为两总体均数不同D.越有理由认为两样本均数不同单选题13 .两数值变量资料的小样本比较的假设检验,首先应考虑()A.用t检验B.用检验C.用秩和检验D.资料是否符合,检验的条件单选题14.在作两样本均数比较时,山、尤均小于30、总体方差不齐且极度偏态的资料宜用()a. r检验B.%检验C. u检验D.秩和检验单选题15 .成组“佥验使用条件为()A.正态性、方差齐性B.只要求正态性C.只要求方差齐性D.无条件要求单选题16 .成组检验使用条件为()A.正态性、方差齐性B.只要求正态性C.只要求方差齐性D.无条件要求2 .观察A、B两种镇痛药物等剂量在产妇分娩中的效果,镇痛时间与相关统计分析
12、结果如 下。请问两种药物的镇痛效果是否相同?此题A药物镇痛时间正态性检验片, B药物镇痛时间正态性检验片表1两种药物在分娩中的镇痛时间(min) VAg物100125113115109145132115128127B药物124143155138115159125136115118Tests of Normality组别Kolmogorov-Smirnov3Shapiro-WilkStatisticdfSig.StatisticdfSig.镇痛时间阳物.17510,200x.97510.929B药物.18710.200x.91210.297a. Lilliefors Significance C
13、orrection*. This is a lower bound of the true significance.Test of Homogeneity of VarianceLevene Statisticdf1df2Sig.镇痛时间Based on Mean.812118.379Based on Median.762118.394Based on Median and.762117.628.394with adjusted dfBased on trimmed mean.810118.380Group Statistics组别NMeanStd. DeviationStd. Error
14、Mean镇痛时间物B药物1010120.90132.8012.99116.0264.1085.068Independent Samples TestLevenes Test for Equality of Variancest-test for Equality of MeansFSig.IdfSig. (2-tailed)Mean DifferenceStd. Error Difference95% Confidence Inteival of the DifferenceLowerUpper就病时间 Equal variances assumed.812.3791.82418,08511,
15、9006.52425,6061.806Equal variances not assumed-1.82417,261,08611,9006.524-25.6481.848判断题3 .观察A、B两种镇痛药物等剂量在产妇分娩中的效果,镇痛时间与相关统计分析结果如下。请问两种药物的镇痛效果是否相同?此题A、B两组总体方差齐()表1两种药物在分娩中的镇痛时间(min) VAg物100125113115109145132115128127B药物124143155138115159125136115118Tests of Normality组别Kolmogorov-Smirnov3Shapiro-Wilk
16、StatisticdfSig.StatisticdfSig.镇痛时间够物.17510.200x.97510.929B药物.18710.200.91210.297a. Lilliefors Significance Correction*. This is a lower bound of the true significance.Test of Homogeneity of VarianceLevene Statisticdf1df2Sig.镇痛时间Based on MeanBased on MedianBased on Median and with adjusted dfBased on
17、 trimmed mean.812.762.762.8101111181817,62818.379.394.394.380Group Statistics组别NMeanStd. DeviationStd. Error Mean镇痛时间物B药物1010120.90132.8012.99116.0264.1085.068Independent Samples TestLevenes Test for Equality of Variancest-test for Equality of MeansFSig.IdfSig. (2-tailed)Mean DifferenceStd. Error Di
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