Lecture1 - Lecture 1: Introduction to Lecture 1:...

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Unformatted text preview: Lecture 1: Introduction to Lecture 1: Introduction to Data and Distributions Chapter 1 Chapter 1 Important Thing Important Things www.stat.purdue.edu/~xuanyaoh/stat350 Syllabu Syllabus Textbook Classroom Locations Policy: Hw/Lab/Class Participation/Exams Exam Schedule SAS SAS The Required Textbook The Required Textbook What is Statistics? What is Statistics? Statistics is a mathematical science pertaining to the Statistics is a mathematical science pertaining to the collection, analysis, interpretation or explanation, and presentation of data Suppose we want to have an idea about how well do Purdue students do in MA162 in the past 5 years, what can one do to find it out? Find MA162 records and check them too many to look at, not realistic in most cases Draw a number of records and try to make a reasonable guess guess statistics comes into play! Population vs Sample Population vs. Samples Population: All objects of interest Sample: a subset of the population Sample: a subset of the population Examples of Data Examples of Data Results from making observations on one or more variables x = score on a STAT 350 midterm exam x = score on a STAT 350 midterm exam Univariate data or one variable...
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Lecture1 - Lecture 1: Introduction to Lecture 1:...

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