# Lecture 1 - January 9 2008[OUTLINE OF LECTURE 1 What you need to know for today's lecture I II III What is statistics and what do statisticians do

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January 9, 2008 [ OUTLINE OF LECTURE 1 ] 1 What you need to know for today’s lecture I. What is statistics, and what do statisticians do? II. Why statistics is useful in everyday life? III. What can you expect from statistics and statisticians? What you need to remember from today’s lecture 1. Two basic terminologies: Individuals are the objects described by a set of data. Individuals may be people, but they may also be animals or things. Example: Freshmen, 6-week-old babies, golden retrievers, fields of corn, cells A variable is any characteristic of an individual. A variable can take different values for different individuals. Example: Age, height, blood pressure, ethnicity, leaf length, first language 2. Two types of variables quantitative variable: Something that can be counted or measured for each individual and then added, subtracted, averaged, etc., across individuals in the population. Example: How tall you are, your age, your blood cholesterol level, the number of credit

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## This note was uploaded on 06/24/2008 for the course MATH 1070 taught by Professor Akbas during the Summer '08 term at Georgia State University, Atlanta.

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Lecture 1 - January 9 2008[OUTLINE OF LECTURE 1 What you need to know for today's lecture I II III What is statistics and what do statisticians do

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