Practice Problems 1-KEY 1. The closing stock price of Ahmadi‚ Inc. for a sample of 10 trading days is shown below. Day Stock Price 1 84 2 87 3 84 4 88 5 85 6 90 7 91 8 83 9 82 10 86 For the above sample‚ compute the following measures. a. b. c. The mean = ∑X/n = 860/10 = 86 The median = (85+86)/2 = 85.5 The variance = ∑ X - X 2/ n-1 = {(84-86)2 + (87-86)2 + (84-86)2 + (88-86)2 + (85-86)2 + (90-86)2 + (91-86)2 + (83The standard deviation = √8.89 = 2.98 The coefficient of variation = 2.98/86 * 100%
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Official Statistics on crime are often likened to the ¡§tip of an Iceberg¡¨. Critically assess this assertion in light of the ¡§dark figure¡¨ of crime and any new forms of data that can provide a clearer picture of the true extent of crime. Crime is continuously changing in its definition in people¡¦s perceptions with no complex classification being universally accepted. This forms the basis of the problems faced when attempting to count crime‚ who determines what crime is; the government of
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Anthropology 2A Reading response #1 9/30/13 Article 19. Who Needs Love! The author of‚ “Who Need Love!” Nicholas D. Kristof interviewed several married couples in Japan about their marriages. The answer was surprising; most of the couples in Japan are‚ by international standards‚ exceptionally incompatible. However the strength of the Japanese family is extremely higher than the ones in the U.S. The divorce rate in the U.S. is 55 percents‚ however the divorce rate in Japan is almost only half
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September 16th‚ 2012 This week’s assignment is about the use of misleading statistics. Companies and individuals use statistics in a variety of way in order to provide information on certain things. The use of misleading statistics‚ while not ethical‚ could be viewed as valuable‚ if it increases profit margins or awareness of the stated topic of the statistic in a biased way. Question number 8 provides a statistic that Vitamin E is an antioxidant that may help fight heart disease and cancer
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United States in 2005. e. The advertising medium (radio‚ television‚ or print) used to promote a product. 2. Classify each of the following qualitative variables as ordinal or nominative. Explain your answers. Qualitative Variables Categories Statistics course letter grade A B C D F Door choice on Let’s Make A Deal Door﹟1 Door﹟2 Personal computer ownership Yes No Restaurant rating ***** **** *** ** * Incoming tax filing status Married filing jointly; Married filing separately; Single;
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best fit. For the observed data point (x‚ y) and the estimated data value on a line of best fit (x‚ y0)‚ the residual is y – y0. Day | Height in centimeters | 1 | 3 | 2 | 5.1 | 3 | 7.2 | 4 | 8.8 | 5 | 10.5 | 6 | 12.5 | 7 | 14 | 8 | 15.9 | 9 | 17.3 | 10 | 18.9 | * A residual plot is a plot of each x-value and its corresponding residual. For the observed data point (x‚ y) and the estimated data value on a line of best fit (x‚ y0)‚ the point on a residual
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Test Bank for Marketing Management 14th Edition Part 1 Top of Form ________ is the study of how individuals‚ groups‚ and organizations select‚ buy‚ use‚ and dispose of goods‚ services‚ ideas‚ or experiences to satisfy their needs and wants. A) Target marketing B) Mind mapping C) Consumer activism D) Consumer behavior E) Product differentiation Which of the following would be the best illustration of a subculture? A) a religion B) a group of close friends C) your university D) a fraternity
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football fans on the go‚ STATS delivers a customized mobile Web product with complete season editorial and statistics. iPhone Application STATS’ developers have engineered a premium white-label iPhone Solution. STATS delivers branded standalone iPhone applications covering all the exciting global football action. Fantasy Games STATS stands alone as the only innovative provider of sports statistics and fantasy game development. STATS can provide predictors or comprehensive white-label fantasy solutions
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Omkar & Yaying Wednesday 5-6pm WEEK 3 BES PASS Descriptive Statistics Population - a set of all possible observations. Sample - a portion of a population. We often use information concerning a sample to make an inference (conclusion) about the population. Parameter - describes a characteristic of the population‚ eg: the population variance Statistic- describes a characteristic of a sample‚ eg: the sample variance Frequency Distribution and Histograms Class - a collection of
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File: ch07‚ Chapter 7: Budgeting and Cost Estimation Multiple Choice 1. If a project budget is overfunded‚ it will often ________. a) Produce waste b) Encourage slack management c) Improve morale d) Produce waste and encourage slack management Ans: d Response: Refer to chapter 7‚ introduction. Level: easy 2. If a project budget is underfunded‚ it will often ________. a) Inhibit accomplishment b) Frustrate committed stakeholders c) Inhibit accomplishment and frustrate
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