MATH201 Lecture Notes - Lecture 1: Blind Taste Test, Statistical Inference, Descriptive Statistics
18 Jul 2016
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Document Summary
Statistics: the study of the collection, organization, presentation, and characterization of information to assist in data analysis and decision making. Numerical information is collected in the form of dated and used to draw conclusions. Two processes of statistics: describing large data sets descriptive statistics. Utilizes numerical and graphical methods to look for patterns in data to correctly identify trends: drawing conclusions inferential statistics. Makes possible the estimation of characteristics of a population. Population: set of units that are of interest for a study. Measurement: process used to assign numbers to variables of individual population units. Census: collecting information from every member of a population. Sample: subset or portion of a population selected for analysis. 1000 cola consumers were asked in a blind taste test for their preference of two colas. Variable of interest: preference coke vs. pepsi . Conclusions about data based on patterns revealed. One or more variables to investigate: ex: average/mean.
