2019医学统计学ppt英文课件CH01 introduction.ppt
《2019医学统计学ppt英文课件CH01 introduction.ppt》由会员分享,可在线阅读,更多相关《2019医学统计学ppt英文课件CH01 introduction.ppt(38页珍藏版)》请在三一文库上搜索。
1、Postgraduate books recommended by Degree Management and Postgraduate Education Bureau, Ministry of Education Medical Statistics (the 2nd edition),Arrangement: total 72 class hours, two classes each week,chapter 1 Introduction Key definitions the steps for medical statistics Brief history of Statisti
2、cs,Statistics The science for data collection, sorting, and analysis.,Definition:the science that study the collection, sorting and analysis of medical data. Characteristics: 1、Using the quantity to reflect the quality 2、Using chance events (uncertainty) to reflect the inevitability (rules),Medical
3、Statistics,Learning objectives: 1、Basic principles and methods of Statistics (Learning Emphasis) 2、Application Statistics(Clinical Medicine, Preventive Medicine, and Health Care Management),Medical Statistics,Purpose:a tool for medical research Emphasis: statistical indicators used for calculating o
4、r comparing the quantitative characteristics of population Example: health expectation infant mortality,Medical Statistics,Section 1. Key definitions, variable, individual, sample and population,individual(observatory unit):the basic unit in statistical research, it depends on the purpose. variable(
5、indicator):individual characteristics examples: height、weight、gender、blood type、treatment effect etc.,Variable value:the value of variables Examples: height 1.65 meters weight 52 kg gender female blood type “O” laboratory test negative treatment effect better Data: composed of a lot of variable valu
6、es. Example: Data for blood glucose,homogeneity:common characteristics for the given individuals example: the heights of the boys with the age of 7 living in Changsha 2004 variation: difference existing among the variable values of homogeneity individuals example: the different heights of the boys w
7、ith the age of 7 living in Changsha 2004,Definition:the whole homogeneity individuals determined by specific purpose. example:all the heights of boys at 7 that lived in Changsha 2004 finite population:the space, time and population for a specific population have been limited. infinite population: no
8、 time and space limits for the population. Such populations only exist in imagination, so it is called infinite population.,population,definition:the set of variable values of some individuals sampled from the population at random. Example: the heights of 200 boys at 7 from Changsha.,sample,Sampling
9、 study,Sample information (statistic),Population characteristics (parameter),inference,note:sampling is only the way to get information, inferring the population is our purpose,、variable and data,measurement data: it is also called as quantitative or numerical data. Its value is quantitative. Measur
10、ement data always has measurement units. example:height data, weight data,enumeration data: qualitative or count data. For such data, it needs to classify the observation units before and count them. Its value appear different characteristics and sorts.,Binomial: gender, live or death, yes or no. Mu
11、ltiple:blood type, A、B、O、AB.,ranked data: ordinal or semi-quantitative data. It need to classify observatory units into different classes according the extent before calculate the frequencies of each groups. There exists obvious differences among different classes. example: to evaluate the treatment
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 2019医学统计学ppt英文课件CH01 introduction 2019 医学 统计学 ppt 英文 课件 CH01
链接地址:https://www.31doc.com/p-2853603.html