《统计学基础》课件-4.4 标志变异指标分析法

STATISTICS统计学基础统计学基础TheFoundationsofStatistics项目四静态统计指标分析Analysisofstaticstatisticalindicators经济贸易系DepartmentofEconomicsandTrade主讲教师

Instructor所属部门Department标志变异指标分析法Theanalysisofvariationindicators第四部分PART0101山西水利职业技术学院SHANXIWATERCONSERVANCYVOCATIONALANDTECHNICALCOLLEGE统计学基础TheFoundationsofStatistics标志变异指标分析法VariationIndicatorsanalysis标志变异指标的计算TheComputationofVariationIndicators标志变异指标的计算TheComputationofVariationIndicators全距Range平均差Meandeviation标准差系数Coefficientofvariation0102标准差Standarddeviation030301020403统计学基础TheFoundationsofStatistics全距

Range1全距又称极差，它是总体各单位标志值中最大值与最小值之差，用

R表示，其公式表示为R=最大标志值-最小标志值Therange,alsoknownastheextremedifference,isthesimplestandmostintuitiveofallvariationindicators.Itsdefinitionis:thedifferencebetweenthemaximumandminimumvaluesamongthecharacteristicvaluesofapopulation.R=Maximumcharacteristicvalue-Minimumcharacteristicvalue平均差211平均差

Meandeviation（1）简单平均差SimpleMeanDeviation（2）加权平均差WeightedMeanDeviation标志变异指标分析法VariationIndicatorsanalysis标志变异指标的计算TheComputationofVariationIndicators统计学基础TheFoundationsofStatistics1平均差211标准差

Standarddeviation标准差系数

Coefficientofvariation（1）简单标准差SimpleStandardDeviation（2）加权标准差WeightedStandardDeviation标志变异指标分析法VariationIndicatorsanalysis标志变异指标的计算TheComputationofVariationIndicators标准差系数的重要特点是，不受计量单位和标志值水平的影响，消除了不同总体之间在计算单位、平均水平方面的不可比性。Theimportantcharacteristicofstandarddeviationcoefficientisthatitisnotaffectedbytheunitofmeasurementandthelevelofmarkervalue,andeliminatestheincomparabilitybetweendifferentpopulationsintermsofcalculationunitandaveragelevel.谢谢观看！谢谢观看！THANKYOU!THANKYOU!