Working Paper 05-47 Statistics and Econometrics Series 09 July 2005 Departamento de Estadística Universidad Carlos III de Madrid Calle Madrid‚ 126 28903 Getafe (Spain) Fax (34) 91 624-98-49 BAYESIAN INFERENCE FOR THE HALF-NORMAL AND HALF-T DISTRIBUTIONS M.P. Wiper‚ F.J. Girón‚ A. Pewsey* Abstract In this article we consider approaches to Bayesian inference for the half-normal and half-t distributions. We show that a generalized version of the normal- gamma distribution is conjugate to the
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BUS 105e: Statistics By Dr Tony Halim GBA: 27 February 2013 Done by: Koh En Song Andrew (Q1211397) Melissa Teo Kah Leng (E1011088) Woon Wei Jie Jared T 04 1. Over the span of 100 days‚ the total revenue for Unicafe North and Unicafe West is $21876.60 and $22042.00 respectively. The average revenue for Unicafe North is $218.77. The average revenue for Unicafe West is $220.42. The highest revenue occurred on the 88th day for both outlets. The lowest revenue occurred on 39th day for
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Statistics in Business Heather Vinson QNT/351 May 14‚ 2013 Babak Memarian Statistics in Business Statistics is the branch of mathematics used to collect‚ analyze‚ interpret‚ and present data. It is used by business owners to make calculated decisions regarding the future of their companies. Types of Statistics There are two types of statistics. Descriptive statistics deal with describing a set of data elements graphically. This type of statistic does not make
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In each of the assignments in this course‚ you will be dealing with the following scenario: American Intellectual Union (AIU) has assembled a team of researchers in the United States and around the world to study job satisfaction. Congratulations‚ you have been selected to participate in this massive global undertaking. The study will require that you examine data‚ analyze the results‚ and share the results with groups of other researchers. Job satisfaction is important to companies large and
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Heather Rajski English 093-A5B Argument/Persuasive Essay Draft #1 10-31-2012 "Beating the Statistics" Statistics show eighty-five percent of youth in prison‚ seventy-one percent of high school dropouts‚ ninety percent of homeless and runaway children have an absent father. Fatherless children and youth exhibit higher levels of: depression and suicide‚ delinquency and teen pregnancy‚ behavioral problems‚ illicit and licit substance abuse‚ diminished self-concepts‚ and
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hypothesis: The mean regular unleaded gas prices for your region is the same as that in the study µ 0 = 3.16 Alternate hypothesis: The mean regular unleaded gas prices for your region is greater than that in the study µ A > 3.16 Find the t-test statistic: t=(x(bar) - µ 0 )/(s/sqrt(n)) t = (3.1948 – 3.16)/(0.0889/sqrt(25)) t = 1.957255343 Find the P-value: P = 0.03102312 Write a conclusion in context. Since we are using a 1% level of significance‚ the -level is 0.01. Since P> 0.01‚ we
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Official statistics are published by the Home Office regarding the number of different types of crimes committed and the backgrounds of those responsible. Official statistics are published annually and are used to compare the difference in crime year by year‚ from this government policies are revised and adjusted where they see fit. Some sociologists see the statistics as an invaluable source of information whereas others question their accuracy. Positivists and Functionalists have taken official
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Descriptive Statistics Descriptive statistics is the analysis of data that summarize data in a way such that‚ meaningful patterns emerge from the data. Descriptive statistics do not allow us to reach to the conclusions beyond the data we have analyzed regarding any hypotheses we might have made. They simply describe our data. Measures of Central Tendency: these are ways of describing the central position of a frequency distribution for a group of data through: Mode: Sum of all observations divided
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Statistics Investigation Introduction A new drug was developed that was claimed to lower the cholesterol level in humans. A leading heart specialist was interested to know if the claim made by the company selling the drug was accurate. They enlisted the help of 50 patients. They agreed to take part in an experiment in which 25 patients would be randomly allocated to a group that would take the new drug and the other 25 would take an identical looking pill that was a placebo (a sugar pill that
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Research and statistics for managerial decision making Assignment 2 Mohammed Ahmed Ali
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