1_Lecture1.1_Introduction_0119r_Spring11

# 1_Lecture1.1_Introdu - I Introduction to Statistics PSY207B Spring 2011 Psychological Statistics Objectives You should be able to Define statistics

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1 PSY207 B Spring 2011 Psychological Statistics I. Introduction to Statistics Objectives You should be able to. ... • Define statistics • and tell the difference between descriptive and inferential statistics • Tell the difference between population and samples sampling error parameters and statistics I. Introduction to Statistics 1.1 Statistics Statistics • A set of tools used to organize, describe, and analyze numerical observation • These tools are used to describe and analyze numerical observations from populations and samples I. Introduction to Statistics 1.1 Statistics 1.2 Populations and Samples

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2 Population and Samples • Population - the set of individuals of interest • depressed humans • Sample - a subset of a population • those individuals in our research study Population and Samples • We use different terms to refer to the statistics (numeric properties) used for populations and samples Parameters and Statistics Parameter • A numerical description of a characteristic of a population • average # of hours of sleep for entire population of depressed individuals Statistic • A numerical description of a characteristic of a sample • average # of hours of sleep for those in our study Parameters and Statistics • The term
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## This note was uploaded on 04/20/2011 for the course PSY 207 taught by Professor Pfordesher during the Spring '07 term at SUNY Buffalo.

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1_Lecture1.1_Introdu - I Introduction to Statistics PSY207B Spring 2011 Psychological Statistics Objectives You should be able to Define statistics

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