衛(wèi)生統(tǒng)計(jì)學(xué)頻數(shù)表學(xué)校成都左莉講解

衛(wèi)生統(tǒng)計(jì)學(xué)—頻數(shù)表學(xué)校：成都職業(yè)技術(shù)學(xué)院主講人：左莉護(hù)理專業(yè)教學(xué)資源庫成都職業(yè)技術(shù)學(xué)院10頻數(shù)表【案例】2006年某市120名10歲男孩的身高（cm)資料如下，試問：該組數(shù)據(jù)為何類型資料？如何描述、表達(dá)10歲男孩身高的數(shù)量特征？135.4139.8144.0147.3146.3142.5138.1143.6141.6152.6132.1144.7143.6146.8144.2141.3137.5142.8140.6150.4145.9140.2144.5148.2146.4142.4138.5148.9146.2155.4134.2139.2143.5141.6143.5142.3148.9143.6141.5151.1132.5138.7149.6146.9148.7141.5137.8142.7144.6151.8136.4140.0144.3147.5145.6142.5138.5143.7149.5153.6130.2138.9143.7146.5138.8141.7136.9142.0140.5150.3135.7145.7144.2147.8145.8142.6138.6143.8141.3153.9133.4139.6143.7147.5144.8148.0137.4142.1140.8141.8134.5139.4142.9147.5144.7141.8136.9143.5140.7151.4145.6147.3143.9141.9151.6145.6148.9144.3139.1145.8145.6145.3147.6148.6145.5137.3146.5140.3148.4136.5成都職業(yè)技術(shù)學(xué)院10頻數(shù)表【概念】將資料的觀察值按大小分為若干組段，描述各組段及相應(yīng)組段頻數(shù)(率)的統(tǒng)計(jì)表稱為頻數(shù)(率)分布表，簡稱頻數(shù)(率)表。不宜過多或過少，一般10組第一組包含最小值，組段不能重疊，每一個組段都是半開半閉區(qū)間，最后一組為閉區(qū)間可等可不等；一般等組距=極差/組數(shù)頻數(shù)表的編制求極差（range）確定組數(shù)與組距確定組段歸組計(jì)數(shù)整理成段頻率與累計(jì)頻率成都職業(yè)技術(shù)學(xué)院10頻數(shù)表【案例】抽樣調(diào)查某地120名18歲~35歲健康男性居民血清鐵含量(μmol/L)如右，試編制頻率分布表。7.428.6523.0221.6121.3121.469.9722.7314.9420.1821.6223.0720.388.4017.3229.6419.6921.6923.9017.4519.0820.5224.1423.7718.3623.0424.2224.1321.5311.0918.8918.2623.2917.6715.3818.6114.2717.4022.5517.5516.1017.9820.1321.0014.5619.8919.8217.4814.8918.3719.5017.0818.1226.0211.3413.8110.2515.9415.8318.5424.5219.2626.1316.9918.8918.4620.8717.5113.1211.7517.4021.3617.1413.7712.5020.4020.3019.3823.1112.6723.0224.3625.6119.5314.7714.3724.7512.7317.2519.0916.7917.1919.3219.5919.1215.3121.7519.4715.5110.8627.8121.6516.3220.7522.1113.1717.5519.2612.6518.4819.8323.1219.2219.2216.7227.9011.7424.6614.1816.52成都職業(yè)技術(shù)學(xué)院10頻數(shù)表

2、確定組段數(shù)、組距

等組距頻數(shù)表：常見不等組距頻數(shù)表：少見3、確定各組段的上、下限組段下限（L）：每個組段的起點(diǎn)；組段上限（U）：每個組段的終點(diǎn)①兩端的組段應(yīng)分別包含最小值或最大值；②盡量取較整齊的數(shù)值作為組段的端點(diǎn)，便于對數(shù)據(jù)進(jìn)行表述；③最后一個組段應(yīng)同時寫出上限和下限來

4、列表整理、統(tǒng)計(jì)各組段的頻數(shù)、頻率組段劃記頻數(shù)6~一18~上310~正一612~正上814~正正丅1216~正正正正2018~正正正正正丅2720~正正正上1822~正正丅1224~正上826~止428~30一1合計(jì)120成都職業(yè)技術(shù)學(xué)院10頻數(shù)表組段（1）頻數(shù)（2）頻率（3）累計(jì)頻數(shù)（4）累計(jì)頻率（5）6~10.8310.838~32.5043.3310~65.00108.3312~86.671815.0014~1210.003025.0016~2016.675041.6718~2722.507764.1720~1815.009579.1722~1210.0010789.1724~86.6711595.8326~43.3311999.1728~3010.83120100.00合計(jì)120100同一組資料，不同的人編制的頻數(shù)表，結(jié)果不盡相同，允許幾個合理的結(jié)果并存。

成都職業(yè)技術(shù)學(xué)院10頻數(shù)表①分布特征：集中趨勢、離散趨勢②分布類型：對稱分布、偏態(tài)分布對稱分布型：指集中位置在正中，左右兩側(cè)頻數(shù)分布大體對稱。

頻數(shù)分布偏態(tài)分布型：指集中位置偏向一側(cè)，頻數(shù)分布不對稱。偏態(tài)分布型正偏態(tài)分布：集中位置偏向數(shù)值小的一側(cè)負(fù)偏態(tài)分布：集中位置偏向數(shù)值大的一側(cè)（1）揭示資料的頻數(shù)分布特征和頻數(shù)分布類型頻數(shù)分布的兩個重要特征是（）A統(tǒng)計(jì)量與參數(shù)B樣本均數(shù)與總體均數(shù)C樣本與總體D集中趨勢與離散趨勢

——2017年1月統(tǒng)考試題含藥量（mg）頻數(shù)f37~340~643~1546~1849~3052~1455~1158~261~641合計(jì)100表某藥100片的含藥量的頻數(shù)表成都職業(yè)技術(shù)學(xué)院10頻數(shù)表轉(zhuǎn)氨酶含量人數(shù)12~215~918~1421~2324~1927~1430~1133~936~739~442~453合計(jì)115表115名正常成年女子血清轉(zhuǎn)氨酶（mmol/L）含量分布肌紅蛋白含量人數(shù)0~25~310~715~920~102