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统计学名词population母体sample样本census普查sampling抽样quantitative量的qualitative/categorical质的discrete离散的continuous连续的populationparamet

ers母体参数samplestatistics样本统计量descriptivestatistics叙述统计学inferential/inductivestatistics推论/归纳统计学levelsofmeasurement衡量尺度nominalsca

le名目尺度ordinalscale顺序尺度intervalscale区间尺度ratioscale比例尺度frequencydistribution次数分配relativefrequency相对次数range全距classmidpoint组中点cla

sslimits组限classboundaries组界classwidth组距cumulativefrequency(以下)累加次数decumulativefrequency以上累加次数histogram直方图piechart饼

图ogive肩形图frequencypolygon多边形图cumulativefrequencypolygon累加次数多边形图boxplot盒须图stemandleafplot枝叶图measuresofcentraltendency中央趋势量数mean平均数me

dian中位数mode众数locationmeasures位置量数percentile百分位数quartile四分位数decile十分位数dispersionmeasures分散量数range全距interquartile-rangeIQR四分位距meanabsoluted

eviation平均绝对离差variance变异数standarddeviation标准差coefficientofvariation变异系数left-skewed左偏negative-skewed负偏righ

t-skewed右偏positive-skewed正偏contingencytable列联表samplingdistribution(ofastatistic)(某个统计量的)抽样分布pointestimate点估计值pointestimator点估计式unbiasedestimator不偏点

估计式efficientestimator有效点估计式consistentestimator一致点估计式confidencelevel信赖水准confidenceinterval信赖区间nullhypothesis虚无假设alternativehypothesis对立假设left-t

ailedtest左尾检定right-tailedtest右尾检定two-tailedtest双尾检定teststatistic检定统计量criticalvalue临界值