Unformatted text preview: 091107 Introduction To Statistics Notes Ch. 2 1, 22 (2.1)ultimate objective is to understand the data, not just obtaining a table or graphimportant characteristics of data include: (1) Centera representative or average value that indicates where the middle of the data set is located, (2) Variationa measure of the amount that the data values vary among themselves, (3) Distributionthe nature or shape of the distribution of the data, such as bellshaped, uniform, or skewed, (4) Outlierssample values that lie very far away from the vast majority of the other sample values, and (5) Time changing characteristics of the data over time. (2.2)often helpful to organize and summarize the data by constructing a frequency distribution (helps us understand the nature of the distribution of a data setavoid making the class width the difference between the lower class limit and the upper class limitsimplify process of finding class boundaries by understanding that they basically split the difference between the...
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This note was uploaded on 04/17/2008 for the course MATH unknown taught by Professor Sapko during the Fall '08 term at Mass Colleges.
 Fall '08
 Sapko
 Statistics

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