Model Answers for Chapter 4: Evaluating Classification and Predictive Performance Answer to 4.3.a: Leftmost bar: If we take the 10% "most probable 1’s(frauds)” (as ranked by the model), it will yield 6.5 times as many 1’s (frauds), as would a random selection of 10% of the records. 2nd bar from left: If we take the second highest decile (10%) of records that are ranked by the model as “the most probable 1’s (frauds ” it will yield 2.7 times as many 1’s (frauds), as would a random selection
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Memorandum To: CC: From: Date: Re: The Cincinnati Enquirer Kristen DelGuzzi Ashley N. Ear; September 16, 2007 Data Analysis of Hamilton County Judges Probabilities used to assist with Ranking of Hamilton County Judges After the current statistics were gathered to produce data analysis regarding Hamilton County Judges, we can come to a conclusion and rank judges appropriately by their probability to be appealed, reversed and a combination of the both. With the provided data analysis, I have
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2 Broad Study in Statistics Descriptive (mô tả) : provides simple summaries about the data collected & about the preliminary observations that have beed made. Such summaries maybe either quantitative (numerical measures) or visual (e.g. simple-to-understand graphs) e.g. Present a summary report of this year business result to management Inferential (suy luận) : are systems of procedures that can be used to draw conclusions from datasets arising from systems affected by random variation. The
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[pic] FACULTY OF LAW AND BUSINESS School of Business North Sydney Campus Semester 2, 2014 STAT102: BUSINESS DATA ANALYSIS Probability Trees A survey of STAT102 students reveals that among the students that attain CR or better grades, 60% of them attended both lectures and tutorials. Among the students that attain PASS or FAILURE, only 20% of them attended both lectures and tutorials. Not attending both lectures and tutorials and with self-study, a student feels
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the event that the person is infected and T be the event that the person is tested positive. Determine the least value of x such that the probability that a person is infected with the B3F1 virus given that he is tested positive is at least 0.95. [3] (Hint : Draw a tree diagram.) 2. [RJC/2009/Promo] (a) [ A' denotes the event ‘A does not occur’.] 11 8 Given that P ( A ∪ B ) = and P ( A '∩ B ) = , determine P ( B ) if 15 45 (i) A and B are two mutually exclusive events,
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Based on the experiment illustrated in the picture and the experiment that I conducted, I concluded to the following results. The probability of getting a possible 3 if we roll one die, is 1/6 as the die has 6 sides and the number 3 is only in 1 side of the die. Although, if we roll two dice, the probability of getting a possible 3 in at least one die, is twice as likely to occur with a chance of 1/6 in the one die plus 1/6 on the other, which is equal to 2/6 for both dice and therefore simplified
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2 Probability To most people, probability is a loosely defined term employed in everyday’s conversation to indicate the measure of one’s belief in the occurrence of a future event. Say, what is the chance of arriving on time if one takes the bus? takes the taxi? However, for scientific purposes, it is necessary to give the word probability a definitive, clear interpretation. One can think of probability as the language in discussing uncertainty. For instance, in tossing a coin (random experiment),
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Mat 205-01 Statistics: Course summary December 3, 2014 Emmanuel Johnson Descriptive statistics is the term given to the analysis of data that helps describe, show or summarize data in a meaningful way such that, for example, patterns might emerge from the data. Descriptive statistics do not, however, allow us to make conclusions beyond the data we have analysed or reach conclusions regarding any hypotheses we might have made. They are simply a way to describe our data. Descriptive
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Blake Electronics Version 1: September 17th, 2014 Presented by: Case Study for Blake Electronics Company profile Blake Electronics was founded in 1979 by Steve Blake. Based in Long Beach, California, Blake Electronics manufactures various types of electronic components including resistors, capacitors, and inductors. Blake Electronics supplies components to companies that manufacture more complicated electronic equipment. Total annual sales increased $8M between 1992 and 2002 More than
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Avalanche Corporation Bayesian Analysis Case Question 1. Determine the break-even volume for the two production options(bath and line) Suppose the break-even volume should be x units total cost for batch flow production equals 475,000+ 75x total cost for line flow production equals 900,000+60x if 475,000+75x = 900,000+60x , we will have x= 28,334 units. if more than 28,334 units are produced, the cost of batch flow production will be higher than that of line flow production
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