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5、tstwice as many a as ba is 20% more than b , _ ! Y / % Yd, d_d! u% F F C Y* D;L_ WC :a a b C b 20% (a-b)/b=20% Geometry(W=)acute angle altitudearc areaangle bisector bisectcenterchord circle Y微臣教育 專注 GRE課程咨詢：數(shù)學(xué)滿分班：GRE 數(shù)學(xué)詞匯 【陳琦團(tuán)隊(duì)微臣教育專注 GRE】Y circumference circumscribe clockwise concentric circle cone

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8、glevertical angle volume width Z Data Analysis(Y)1. frequency / count relative frequency bar graphsegmented bar graph sectorhistogram univariate trend bivariate Y j mwg tw2. combination permutationprobability, possibility central tendency arithmetic mean/mean medianmode weighted mean statisticsquart

9、ile percentileinterquartile range outlier g F微臣教育 專注 GRE 課程咨詢：數(shù)學(xué)滿分班：GRE 數(shù)學(xué)詞匯【陳琦團(tuán)隊(duì)微臣教育專注 GRE】 : 5d Y: Y:Y: Fdispersion boxplotsstandard deviationsample standard deviation intersectiondisjoint/ mutually exclusive inclusion-exclusion principle probability experiment random experimentoutcome sample spac

10、e eventequally likely random selection mutually exclusive independent factorial combinationdistribution curve density curve frequency curve random variable UGUG) &p #2 & & Y w微臣教育 專注 GRE課程咨詢：數(shù)學(xué)滿分班：GRE 數(shù)學(xué)詞匯 【陳琦團(tuán)隊(duì) 微臣教育 專注 GRE】probability distributionexpected value/mean of random variable x discrete random variablesapproximately normally distribu