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1、Description of Measurement Data,Chapter 2,疲核洛蚌彰纶男锥弛兆院组画贸拓驳鸣派疮疚酋蜀丁褂撮章授一碧犊侯独医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Content,Frequency distribution Descriptions of central tendency Measures of dispersion Normal distribution Range of reference val
2、ue,勾汉棋栏驹杰抢共仆穴洒痹声冠雕警出灼乔涧帽粘薛绷翱点神墙朵绍秒囱医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Section 1 Frequency Distribution,1、Frequency table：Example 2-1 To acquire the values of total cholesterol in serum of 101 healthy female adults as below,and to work out
3、 the frequency table.,潍济胯擒倚脊囊溃膀糕拖苞悟匪捷缮伦呕妥款桩缨根哭垂贡湾腹疵且骗坏医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,殷绪篆簧闷套腮惋迷建刻隋炯赌醉厚疫妨堤墅阻死败杀设雹洗星法漆瞩萝医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Approach：(1).Range:T
4、he difference between the maximum and the minimum,R.,。,雕帖团刷夷池厦体省偷蟹草央顶育专茎钒葬粮玻登炊深匡秉抖絮熄代罐呆医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,(2)Class Interval(i):Usually divided into 10-15 groups(3)Group：Lower limit（L）：the beginning of every groupUpper limi
5、t（U）：the end of every group,竣瑰队悬葡蛾催炮独师眨宅辜撅仆鼻愿蔼遵曙哀窟菠犀判萧爪致倡捏饵廓医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Group 2.30 2.60 2.90 3.20 5.605.90,2.30,2.60,络玉缮裙孙彬晒膊酶互虱琉贿绑块圣始房耳毛佑府皑填簿亏寺晾激泣梨吟医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 d
6、escription of measurement data,(4)Grouping and Counting Frequencies,二咐插痹尾董占械詹楔跨揪因艾啃睡嘶祝优卫火断方竣咐狈躁湃甚么迢倒医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,2.30,2.60,摸螺茧秸廖嫌球凑漫驭盟刽握魁哉擅缩撞宴糖资猩座谚削豌砖膝沃隅柯鼠医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件C
7、HO2 description of measurement data,2、Graph of frequency distribution,胰砚吟啼幌病伸澡蛙庚绪举代粱饮败续钦惮域涪列瓣窥尸拌多铲卜泅蒙铱医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,3、Use of frequency table and graph of frequency distribution,1Describing the type of frequencies dist
8、ribution（1）Symmetric distribution：,蒙蜂噶融屠戊抿抢莆儒崭颅虞孽琵块丢柏青涂那鳖愿虏矢峻协慷枝炎唁茶医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,（2）Skewed to the right distribution/Positively skewed distribution(3)Skewed to the left distribution/negatively skewed distribution,凡培巾前
9、撮巧纂特贼庆剔亩坚后武氢踩稗牧俺忘邱喊祭哎腾方涎士巨其科医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,2Describing the characteristic of frequencies distribution3.Finding shadiness value4.Convenient for next statistical analysis and management,政逝隐误图敢篙管房够扰症屉纫询秒胶遇铅洁耐阂则翱汛啃藐嫡避甩径必医学
10、统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Section 2 Descriptions of Central Tendency,Average in common use:Mean Geometric mean Median,仙氟慰杯子席等答辖塑锡颊悼寅亢蓟赁屯衰菩豆啮褒累棚户徘秧帝惺篓五医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of m
11、easurement data,1、Mean,A descriptive statistic used as a measure of central tendency.All scores in a set of scores are added together and divided by the number of subjects.,合涛塑舵统滦闷漂苑劣椎微痒溅公暴年尚葫蒸视娇挚藉侧哦实亭外书猾能医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement dat
12、a,(1)、Calculate Method,Direct Account:Formula：,睹走违欲加宜陨蚕勤滓祈良壁沃话日扁蹲桔注献宅交稻莎粪碟擦浙十痪谁医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Example 2-2 To calculate mean of the values of total cholesterol in serum of 100 healthy female adults in direct method.,站来何
13、饵甥牺泳砧檬宅左璃深邵逐屯与筏吟伯壮卑乏论析署空盯恿剖言瓣医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,辜椽钓灾侩店液迂荆薛肤忱砂敌桔忌饭蒸置民癌仑滥帝慢稠铁橇搁蔓闻歌医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Weighting Method：Formula：,勉勤浸绳琵博列怨币泵畔头守瞬砸蹿裔淬弦
14、煌僵讳孕遭汛斩抉羹拙甄凰尝医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Example 2-3 Calculate the mean of values in table 2-1 by weighting method,邮哥来孪褐八涪蒋塔解求孩芦吞且孵赘烟化惠蜕株验消诅步磁馈反唤谩藻医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of meas
15、urement data,揩蛮夫右题织酝封介码馏馅杨花育舵姆夸硷犀栽侨凉粹必走努谎金陈请慑医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,(2)、Application,Adapt to describe Symmetric distribution，specially of normal distribution data.,诺蛇乘疚拙吁宦纷特布疤钙煮客腿奴择哟墒戎赶坛古过恃绳吐抬胺檀掺妥医学统计学ppt英文课件CHO2 description o
16、f measurement data医学统计学ppt英文课件CHO2 description of measurement data,2、Geometric mean,The geometric mean is simply the average of symmetric values after logarithm transition.(1)、Calculate MethodDirect method Formula：or,祥浊蔓趾治惭牺吨善卸卧驹殿放颓每铜劳侩你颇肮淮迹抄七承蟹渴惠沃胖医学统计学ppt英文课件CHO2 description of measurement data医学统
17、计学ppt英文课件CHO2 description of measurement data,Example 2-4 To acquire reciprocal titer of sera as below,calculate the geometric mean.10，20，40，40,160,足污轻否荧似奴壶冒稼扬狗桨产皿正烟辉零僚帚宵亚碳访蒂忽摊囊蝗鹊尽医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Weighting method,Formul
18、a：,封脓唁秒亡虱惫厉玛檄涂跳同宾愧襄倦檄肄滤勇伊鹤捶疵诛炼厚鬃笺俗垮医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,(2)、Application：Adapt to data of geometric progression growth，especially of logarithm normal distribution.,跌细潞察伎耗旅税办膝冰画涅陡艰霞之缚旭勿及默拄蕾瞻梭侠顺奢鸵挫弥医学统计学ppt英文课件CHO2 description
19、of measurement data医学统计学ppt英文课件CHO2 description of measurement data,3、Median and Percentile,(1)Median The median is the score/value that is exactly in the middle of a distribution.,披澜堵警冰腕腊钝耪及蝉密垄睡捣绦塌脾锚磷性疡褥衔毛子镁霓麻旬蚀半医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measure
20、ment data,Formula:n-odd numbern-even number,付吠钱瞪存狙草边勾盛喊懊流其航再摩赡冉恿终络铸穷捅蕴拧纽割斑侨鹅医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Example 2-5 Calculate the medium of latent period of 7 patients as below.2,3,4,5,6,9,16,Example 2-6 Calculate the medium of lat
21、ent period of 8 patients as below.1,2,2,3,5,8,15,24,宴座稗缠季扁毯捞兼蜘渴惭闹蛾坏卧哭缘字些袋抖逐均勒今篓榔宋率煤施医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Application,1、All kinds of data2、Data of skewed distribution and those of no exact value in one end or two,画车订吊犬晒仔饭类屏悼张
22、尧惨蔫偏蹦狐郁损煽设贱鼠杏窿糠傈枫警壁框医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,（2）Percentile,Percentile is a kind of position index.,菩讥静娩蒸秩伙凄傅句遇辰寡男得丘鸡侍啪嵌驰照逮瘩针负曾皋馈巷庶钦医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,
23、Direct method,-decimal fraction：-integer：,茄纲捍狙租祟什初奖听颊屉纸喜囊肖贞峨艇荣拂斑抛弧赏旭云牛腥生帘资医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Example 2-7 Calculate no.5 and no.99 percentile as below.,Patients：Days in hospital：n=120，120X5%=6：,者郁凹痘偏星匹古瓣匹贴涤巩准吝贰栽汪饲拙家浑钱妈犯蛰鳃妄帕
24、黍捡阴医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Weighting method,Formula：,侦芒济速隙统衫诈硕当桃奎需韭同彼势译仕另屏遗冈匠空法歪菲姥冈袄肄医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Section 3 Measures of Dispersion,RangeQuartil
25、eVariance and Standard DeviationCoefficient of Variation,坊母庐炼峡让漱喂蜡植怔威柑井辊戏么辐暴谈代磺愁蜕晰雕具谈埔雹谓罪医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,1、Range The difference between the maximum and the minimum,R.,拿宜项箍零昌士阅贴炕矽翌铭拘便妙智鱼只声挽肋儒欠冗活凿醋磨逐铃讳医学统计学ppt英文课件CHO2 des
26、cription of measurement data医学统计学ppt英文课件CHO2 description of measurement data,2、Quartile,QR=Lower QuartileUpper Quartile,狗备链朗际汽某歌经优垒苑唤个茧摸陪谅塘星桂奈动步写镁氧蛔疥汁把匆医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,3、Variance and Standard Deviation,Variance:A measur
27、e of dispersion or variability(spread),calculated by squaring the value of the standard deviation.Sample variance:,照另务并轿底等抄辊倡疾盾鲤镑苦厘烃刨透披短琢武瞒添营立歌离丽循赊医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Population standard deviation Sample standard deviation,
28、睬噎游例浆逐鸽俞开钢辖笺祥幅衍耽芽涣铱钡栗谓泵期凿逆驭娱串惊惶典医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Sample standard deviation can also be calculated as below：,柞绑挠楔猖扼毗是肛爆磁抽裂逛著争韦吉踞疵邮束誉公鸣俞粒琴曳窿吉喘医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of
29、measurement data,Example2-8 Calculate the standard deviation of values in table 2-1,孵局啸持悠茬策之诀义胞描上妆卓桑遣拭湘柠之碗工痢镜惠疫慷口湛蝉怯医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,4、Coefficient of Variation,驳葱苏惨棉贯贪铀滑梗备腻零韩韩搽接亦渝厉勇戈霄俞君滩药畴膛颤践荒医学统计学ppt英文课件CHO2 description
30、 of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Unit 4 Normal Distribution,Fig.2-3.Frequencies Distribution Approaches ti Normal Distribution,洪怜豹拣盂竹纵膘麦账酷鳞铅兜稍忠看掺穴敢甩家把百幌叹槐粗柬屈诈妨医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,1、Concep
31、t,Mathematic function expression:,巧颈淮普司滇蹭沼阎魏矿辗篓窒仕鳃稠访柒刊蜡迷智威卵垫贰奏默偷恭痈医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,2、Characteristic,Bell Curve The normal curve was developed mathematically in 1733.Gauss used the normal curve to analyze astronomical dat
32、a in 1809.The normal curve is often called the Gaussian distribution.The term bell-shaped curve is often used in everyday usage.,违遏渍杰栗悟光淖昌需昌恩仙妆喜鸳撇辈诱伴肄国杂邹趁酣愁藐痈粗劝讯医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Two Parameters The normal distribution is
33、characterized by two parameters:the mean and the standard deviation sigma.The mean is a measure of location or center and the standard deviation is a measure of scale or spread.,食涟膝拂各吴矽鸵捐郁窘腋姜父裹竿膛彩秃皱沤逢萄假乱诚芒剂奖嗅养朔医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measuremen
34、t data,The mean can be any value between infinity and the standard deviation must be positive.Each possible value of and sigma define a specific normal distribution and collectively all possible normal distributions define the normal family.,毯琢咏熄席睛穿蓬馅香毅邹层粗禄再鳃彩涅贪廷炭屎狗绳缘谍劲唤槐返尚医学统计学ppt英文课件CHO2 descripti
35、on of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Fig.2-4 Position Transform of Normal Distribution,适码犬峙势慰诀颧闭寨演沟诚脾姆琴饮易倍篆趴鼠离钙感漳顶摹父太汽由医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Fig.2-5 Illustration for the changing of normal di
36、stribution,邪缕雹绊齐裳桌屑槐晓即另买侩聂浦恋卜届境矛新馈梆寥信扼第梯詹啥会医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Distribution characteristics of Proportion,Fig.2-6.Proportion Rule of Normal Distribution,功查恢窒匈谋卡克矣姜脖乐程尼冶聘循德辗朋驴普菌篙瓜僵映去市孙焙赊医学统计学ppt英文课件CHO2 description of measur
37、ement data医学统计学ppt英文课件CHO2 description of measurement data,3、Standard Normal Distribution,The standard(or canonical)normal distribution is a special member of the normal family that has a mean of 0 and a standard deviation of 1.,邹讥肆滔驻忧未案粱瓷灶租谭价潦躲小侄郭版书长乍边柜蠢踩及讨缴报灿医学统计学ppt英文课件CHO2 description of measure
38、ment data医学统计学ppt英文课件CHO2 description of measurement data,The standard normal distribution is important since the probabilities and percentiles of any normal distribution can be computed from the standard normal distributionif and sigma are known.,硬如龟靶郝萎往陷杠控碱膳穗霓亲讨陶剁禄捞眼层砂凌毋骨烫甫诺菜好脏医学统计学ppt英文课件CHO2 des
39、cription of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Unit 5 Medical Reference Range,1、Concept The reference range is derived mathematically by taking the average value for the mass normal population and allowing for natural variation around that value.,滩嵌胖赚汾曳磕互禁悲俭唯盐疑直粤环验行麦泞浦电
40、棘燕踊卞诊姥昆淘丁医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,One-sided/Two-sidedMedical reference range include、And is in common use,惫焦证内资社瑞樊贵撩烟拒抹躺其巡索莫躯舜咒慈乞另加潜压兄凿万僵埠医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measuremen
41、t data,2、Calculate Medical Reference Range,1、Normal Distribution Method 2、Percentile Method,萄职判诡冒燃汲炸舵羌慧荚弧净慈洱艺臆席抢力向崔亩强狱竹泰盖乙尔台医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Formula,Normal Distribution MethodTwo-sided reference range:One-sided reference
42、 range:or,宗妻似湍们光搅嚎视亢欢仁舌廉枫掖栗右艰娶羞酞屡阮港胸冠如豹阿仲烽医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,撑蝇泣厘蛊梧烤奥泥昆爱溉珐鸯牙阔靛融拳服芯向恶澜乐背尼躇诽瘴第吁医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Example2-9 Evaluate the 95%refer
43、ence range of values in example 2-1.Lower limitUpper limit,伤册吉呕范楷绝尺婶矗缔旧殆肤诡殷暑汐戌么准字裔更骚杆郑迭耻悄赃裁医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,Percentile Method,Two-sided reference range:One-sided reference range:,踪凌郊虎豆叶咽凛矛穗懦啊验聊互锻姐犹硅蛹彬秀滋鸿侄堡壶烹热哉吟酮医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,THANK YOU!,Tel:4805466(office),挤底种调顾住痊屎赠滁殊企补哭驻归涂器肄圃散吹沈索絮两筒粟斯你肺沾医学统计学ppt英文课件CHO2 description of measurement data医学统计学ppt英文课件CHO2 description of measurement data,
