STA 291 - Lecture 12 1STA 291Lecture 12• Exam 1, 5pm-7pm today, Memorial Hall– Bring a calculator.– You will get a formula sheet, like the one online. – Makeup Exam: 7:15pm – 9:45pm, CB 234• no laptop, no cellphone, no blackberry, no iphone, etc (anything that can transmitting wireless signal is not allowed)• Makeup exam list: See if your name is on the list at http://www.ms.uky.edu/~mai/binomial.html• if you have a conflict and not on the list, talk to me, with your schedule. STA 291 - Lecture 12 2• Bring a picture ID, after sitting down, put the ID at your table/armrest.STA 291 - Lecture 12 3Review of Topics (includes, but need not limited to)Probability: events and their probabilities, notation: A and P(A). assigning probabilities in a table.(equally likely, fair die, fair coin, well shuffled deck of cards, select randomly, etc.)STA 291 - Lecture 12 4Rules of Probability (most are on formula sheet)7 rules. Sometimes, you need to use more than one rule to get the final result.STA 291 - Lecture 12 5• R x C Contingency table: joint and marginal probabilities, its properties.Independent or not independentConditional probabilitySTA 291 - Lecture 12 6P(A|B)• The wording for conditional probability:The probability of A given that B had happened.The probability of A, if B happened. If we know that B is true, what is the probability of A.Under the condition that B is true, what is the probability of A.STA 291 - Lecture 12 7• Take your time in writing down what is meant by event A and what is your event B, etc. before using the probability rule(s)• And draw a so called Venn diagram of events to help you thinkSTA 291 - Lecture 12 8• P(A|B) or P(B|A) ? (they are different!)• Independent or disjoint? (they are different!)STA 291 - Lecture 12 9• Get the conditional probability formula from the formula sheet:STA 291 - Lecture 12 10• Union ‘or’ • Intersection ‘and’ STA 291 - Lecture 12 11AB∪AB∩• Mean• Median their propertiesSTA 291 - Lecture 12 12• Sampling technique• SRS• And others: stratified, cluster, systematic, voluntary …STA 291 - Lecture 12 13• Experimentation: the subjects ARE volunteers. The randomness is in the allocation of treatment/control group.• Placebo-control• Randomized• Doubly-blindedSTA 291 - Lecture 12 14• Population parameter• Sample statisticSTA 291 - Lecture 12 15• Various graphs/plots, what can we read from it?STA 291 - Lecture 12 16• Covers up to mean and median of a sample (beginning of chapter 6). But not any measure of spread (i.e. standard deviation, inter-quartile range etc)Chapter 1-5, 6(first 3 sections) + 23(first 5 sections)STA 291 - Lecture 12 17• Lab this week is not going to cover new materials.• Lab will turn into question/answer/office hour. (in the usual places)• No attendance record is taken this week for LABSTA 291 - Lecture 12 18STA 291 - Lecture 12 19Attendance Survey Question• No attendance recorded today.• Study hard and good luck on the