Introduction-to-statistics-1.1-1.2-1.3

# Introduction-to-statistics-1.1-1.2-1.3 - Introduction to...

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Introduction to statistics A. Bourhim Syracuse University MAT121-Fall 2011 A. Bourhim (Syracuse University) Introduction to statistics MAT121-Fall 2011 1 / 1

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Introduction 1 Data are collections of observations (such as measurements, genders, survey responses). 2 Statistics is the study of the collection, organization, and interpretation of data. A common and important goal of statistics is to learn about a large group by examining data from some of its members. A. Bourhim (Syracuse University) Introduction to statistics MAT121-Fall 2011 2 / 1
Population A population is the entire collection of all individuals (scores, people, measurements, and so on) to be studied. Example: You may wonder what is the average height of 2011 basketball players in USA. The population is the group of all 2011 basketball players in USA. A census is the collection of data from every member of the population. A. Bourhim (Syracuse University) Introduction to statistics MAT121-Fall 2011 3 / 1

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A sample is a small selected group from a population. It includes only some members from the group of interest. Sample data must be collected in an appropriate way, such as through a process of random selection. If not, the data may be so completely useless. Example: You may wonder what is the average height of 2011 basketball players in USA. The population is the group of all 2011 basketball players in USA. A. Bourhim (Syracuse University)
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## This note was uploaded on 10/06/2011 for the course MAT 121 taught by Professor Quinn during the Fall '08 term at Syracuse.

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Introduction-to-statistics-1.1-1.2-1.3 - Introduction to...

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