醫(yī)學醫(yī)學統(tǒng)計學描述課件

第一節(jié)頻數(shù)分布、頻數(shù)分布表(frequencytable):例2-1從某單位2019年的職工體檢資料中獲得101名正常成年女子的血清總膽固醇(mmol/L)的測量結(jié)果如下,試編制頻數(shù)分布表第一節(jié)頻數(shù)分布12.354.213.325.354.174.132.784.263.584.344.844.414.783.953.923.583.664.283.263.502.704.614.752913.914.594.192.684.524.913.183.684.833.873.9534.154.554.803.414.123.955.084.533.923.585.3533.603.514.063.073.554.233.574.833.523.844.503.964.503.274.523.194.593.753.984.134.263633.875.713.304.734.175.133.784.573803.933.783.994.484.284.065.265.253.985033.513.863.023.704.333.293.254.154.364.953.003.262.354.213.325.354.174.132.784.2編制步驟如下1.求極差:極差(range)也稱全距,即最大值和最小值之差,記作R。了本例:R=5.71-235=3.36(mmo/L編制步驟如下32.確定組距(i)了組段數(shù)通常取組10-15組了本例組距i=3.36/10=0.336≈0.303.寫組段:組下限(L):每個組段的起點組上限(U):每個組段的終點2.確定組距(i)4組段2.30~2.60~2.90~3.20~5.60~5.90組段54.分組段劃記并統(tǒng)計頻數(shù)L<Ⅹ<U4.分組段劃記并統(tǒng)計頻數(shù)6組段f頻數(shù)(1)2.60~1363.20~3.50~3.804.l0~4.70~5.30~560~5.90組段7頻數(shù)表:由各組段及其頻數(shù)所構(gòu)成的統(tǒng)計表。頻數(shù)表:由各組段及其頻數(shù)所構(gòu)成的統(tǒng)8頻數(shù)分布圖102,453.053.654.254.855.456.10自p%￡mmoLk2.11019￡EA∝K6ⅸ%A0頻數(shù)分布圖9、頻數(shù)表和頻數(shù)分布圖用途1.描述頻數(shù)分布的類型(1)對稱分布:若各組段的頻數(shù)以頻數(shù)最多組段為中心左右兩側(cè)大體對稱,就認為該資料是對稱分布01lφ￡E?！豷6p!8再0、頻數(shù)表和頻數(shù)分布圖用途10醫(yī)學醫(yī)學統(tǒng)計學描述課件11醫(yī)學醫(yī)學統(tǒng)計學描述課件12醫(yī)學醫(yī)學統(tǒng)計學描述課件13醫(yī)學醫(yī)學統(tǒng)計學描述課件14醫(yī)學醫(yī)學統(tǒng)計學描述課件15醫(yī)學醫(yī)學統(tǒng)計學描述課件16醫(yī)學醫(yī)學統(tǒng)計學描述課件17醫(yī)學醫(yī)學統(tǒng)計學描述課件18醫(yī)學醫(yī)學統(tǒng)計學描述課件19醫(yī)學醫(yī)學統(tǒng)計學描述課件20醫(yī)學醫(yī)學統(tǒng)計學描述課件21醫(yī)學醫(yī)學統(tǒng)計學描述課件22醫(yī)學醫(yī)學統(tǒng)計學描述課件23醫(yī)學醫(yī)學統(tǒng)計學描述課件24醫(yī)學醫(yī)學統(tǒng)計學描述課件25醫(yī)學醫(yī)學統(tǒng)計學描述課件26醫(yī)學醫(yī)學統(tǒng)計學描述課件27醫(yī)學醫(yī)學統(tǒng)計學描述課件28醫(yī)學醫(yī)學統(tǒng)計學描述課件29醫(yī)學醫(yī)學統(tǒng)計學描述課件30醫(yī)學醫(yī)學統(tǒng)計學描述課件31醫(yī)學醫(yī)學統(tǒng)計學描述課件32醫(yī)學醫(yī)學統(tǒng)計學描述課件33醫(yī)學醫(yī)學統(tǒng)計學描述課件34醫(yī)學醫(yī)學統(tǒng)計學描述課件35醫(yī)學醫(yī)學統(tǒng)計學描述課件36醫(yī)學醫(yī)學統(tǒng)計學描述課件37醫(yī)學醫(yī)學統(tǒng)計學描述課件38醫(yī)學醫(yī)學統(tǒng)計學描述課件39醫(yī)學醫(yī)學統(tǒng)計學描述課件40醫(yī)學醫(yī)學統(tǒng)計學描述課件41醫(yī)學醫(yī)學統(tǒng)計學描述課件42醫(yī)學醫(yī)學統(tǒng)計學描述課件43醫(yī)學醫(yī)學統(tǒng)計學描述課件44醫(yī)學醫(yī)學統(tǒng)計學描述課件45醫(yī)學醫(yī)學統(tǒng)計學描述課件46醫(yī)學醫(yī)學統(tǒng)計學描述課件47醫(yī)學醫(yī)學統(tǒng)計學描述課件48醫(yī)學醫(yī)學統(tǒng)計學描述課件49醫(yī)學醫(yī)學統(tǒng)計學描述課件50醫(yī)學醫(yī)學統(tǒng)計學描述課件51醫(yī)學醫(yī)學統(tǒng)計學描述課件52醫(yī)學醫(yī)學統(tǒng)計學描述課件53醫(yī)學醫(yī)學統(tǒng)計學描述課件54醫(yī)學醫(yī)學統(tǒng)計學描述課件55醫(yī)學醫(yī)學統(tǒng)計學描述課件56醫(yī)學醫(yī)學統(tǒng)計學描述課件57醫(yī)學醫(yī)學統(tǒng)計學描述課件58醫(yī)學醫(yī)學統(tǒng)計學描述課件59醫(yī)學醫(yī)學統(tǒng)計學描述課件60醫(yī)學醫(yī)學統(tǒng)計學描述課件61醫(yī)學醫(yī)學統(tǒng)計學描述課件62醫(yī)學醫(yī)學統(tǒng)計學描述課件63醫(yī)學醫(yī)學統(tǒng)計學描述課件64醫(yī)學醫(yī)學統(tǒng)計學描述課件65醫(yī)學醫(yī)學統(tǒng)計學描述課件66醫(yī)學醫(yī)學統(tǒng)計學描述課件67醫(yī)學醫(yī)學統(tǒng)計學描述課件68醫(yī)學醫(yī)學統(tǒng)計學描述課件69醫(yī)學醫(yī)學統(tǒng)計學描述課件70醫(yī)學醫(yī)學統(tǒng)計學描述課件71醫(yī)學醫(yī)學統(tǒng)計學描述課件72醫(yī)學醫(yī)學統(tǒng)計學描述課件73醫(yī)學醫(yī)學統(tǒng)計學描述課件74醫(yī)學醫(yī)學統(tǒng)計學描述課件75醫(yī)學醫(yī)學統(tǒng)計學描述課件