Stat 321  Fall 2004  Final Exam Preparation

• Wednesday, December 8 from 1:10-4pm in Studio classroom (02-206)
• Extra office hours:
• Monday 10-11am, 2-3pm
• Q&A session: Tuesday 7:30-9pm in Studio classroom
• Graded Investigations 17, 18 available after noon Monday outside my office door
• Emphasizes more recent material
• Sections 6.1, 7.1-7.3
• Handouts from days 36-40
• Investigations 17-18
• Suggested homework problems from weeks 10-11
• Has substantial cumulative aspect as well
• Roughly 1/2 on newer material
• Study previous review sheets, exams
• You may use book, handouts, assignments, notes
• Technology
• Bring calculator
• No use of Minitab
• Minitab output may be included
• Possibly including irrelevant output
• Interpretations, explanations as important as calculations
• Comparable to in-class, investigation, homework, previous exam questions

Big (More Recent) Ideas

• Point estimation
• Random sample
• Desirable properties
• Unbiasedness
• Minimum variance
• Analysis through simulation
• Analysis through properties of expected value, variance
• Interval estimation
• Basic form: point estimate +/- margin of error
• Margin of error = critical value x standard deviation of point estimate
• Effects of sample size, confidence level
• Interpretation
• “Confidence” means that if repeated samples were chosen and intervals constructed in this manner, then in the long run 95% (or whatever the confidence level is) of the intervals would succeed in capturing the population parameter
• Does not try to estimate individual values, only parameter values
• Procedures
• CI for population mean mu
• With population standard deviation sigma known
• With population standard deviation sigma not known
• t-procedure
• Requires normal population or large sample size
• CI for population proportion p
• Wald procedure
• Adjusted Wald procedure
• All procedures require random sample
• Sample size determination

Some Advice

• Be prepared to think/explain/interpret
• Do not just plug into formulas from text
• Organize notes for efficient retrieval of information
• Don’t plan to use text, notes too much
• Prepare as if exam were closed book/notes
• Understand, don’t memorize
• Re-read
• Handouts
• Especially expository passages, “boxed” paragraphs
• Review sheets from first three exams
• Questions and solutions from first three exams
• Chapters from text
• Review problems
• Re-work examples from handouts
• Re-work investigations
• Re-work suggested homework problems
• Re-work examples from text
• Re-work questions from previous exams
• Work additional exercises from text