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Unformatted text preview: STA 2023 c B.Presnell & D.Wackerly - Lecture 1 1 STA 2023 Spring 2001 Thought for the day: Never wrestle with a pig. You both get dirty and the pig likes it. Lecturer: Dennis Wackerly 222 Griffin-Floyd Hall 392-1941 Ext. 227 Office Hours: Tuesday 9:00 AM 12:00 noon Text: Statistics (8th Ed), by McClave and Sincich. Bundle : includes Minitab statistics software and A Minitab Guide to Statistics, by Meyer and Krueger. Notes in this class are not to be used for commercial purposes. Note-takers for A+ Notes are not welcome. STA 2023 c B.Presnell & D.Wackerly - Lecture 1 2 Course Web page http://web.stat.ufl.edu/ dwack/ FULL version of syllabus (download immediately) Formula Sheet Projects Answers to projects (2 days before quiz/exam) How to get started with Minitab How to convert McClave data set to Minitab format Course notes (Friday for following week) Sample quizzes, exams STA 2023 c B.Presnell & D.Wackerly - Lecture 1 3 HOW TO SUCCEED REGULARLY attend both lectures and discussions. Read and use the text. ACTIVELY do the assignments. DONT FALL BEHIND! For Tomorrow: Pages 210, 39 42. Exercises : 1.13, 1.19 1.23, 2.32 (mean only), 2.352.36 (means only) For Wednesday: Pages 4346, 5054. STA 2023 c B.Presnell & D.Wackerly - Lecture 1 4 Chapter 1 Populations, Samples, Statistical Inference STATISTICS : a branch of science that is concerned with collecting and interpreting data. 1. How can I COMMUNICATE data to others? DESCRIPTIVE STATISTICS (p. 2) Summarize Data Histograms (Section 2.2) Pie Charts, Stem and Leaf Diagrams Numerical Summaries 2. How can data be used to REACH CONCLUSIONS? INFERENTIAL STATISTICS (p. 3) STA 2023 c B.Presnell & D.Wackerly - Lecture 1 5 Population: a large body of units representing ALL of the items of interest to the data collector. (Defn 1.4, p.4) Variable: a characteristic of an individual population unit that is of interest. (Defn 1.5, p.4) Sample: A subset of items selected from the population. (Defn 1.6, p.5) Contains the information that we actually analyse. EXAMPLE : Population of interest : the group of U.F. students who graduated December 16, 2000. Characteristics (Variables) of interest . Income of parents GPA Have job or not? Number of semesters to graduate. STA 2023 c B.Presnell & D.Wackerly - Lecture 1 6 EXAMPLE : According to a survey of 1,002 adults published in USA Today , August 18, 1997, of the TV viewers who had seen the Lubriderm See you later alligator skin lotion commercials liked them a lot....
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