Introduction To Biostatistics
Biostatistics.
It is a combination word made from biology and statistics.
The application of statistics to a wide range of topics in biology problems, including:
Public health.
Medicine.
Ecological and environmental.
Definition
It is the science that provide a way of processing number or analyzing the data that have been collected . The purpose of statistics is to make an implication or an assumption about population which deals with development and application of the most appropriate methods for the:
Collection of data.
Presentation of the collected data.
Analysis and interpretation( understanding) of the results.
Making decisions on the basis of such analysis
Types of Statistics
Descriptive statistics are used to describe and summarize data. Their objective is to communicate results, without generalizing beyond the sample ,to any population .
Some ways in which results are communicated are through
a. measures of central tendency (mean, median ,and mode)
b. measures of dispersion
Inferential statistics are used to apply information from the sample to a larger population
Challenge
Much of life is composed of a systematic component (i.e., signal) and a random component (i.e., error or noise)
Example:
Smoking is associated with lung cancer.
Yet not everyone that smokes, gets lung cancer, and not everyone that gets lung cancer, smokes
Yet we know that there is an association (a systematic component)
Sources of Data
المادة المعروضة اعلاه هي مدخل الى المحاضرة المرفوعة بواسطة استاذ(ة) المادة . وقد تبدو لك غير متكاملة . حيث يضع استاذ المادة في بعض الاحيان فقط الجزء الاول من المحاضرة من اجل الاطلاع على ما ستقوم بتحميله لاحقا . في نظام التعليم الالكتروني نوفر هذه الخدمة لكي نبقيك على اطلاع حول محتوى الملف الذي ستقوم بتحميله .
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