|Homework: | DATA MODEL AND DECISION MAKING by Demitri Betrimas | • Exercise 2.4 • Exercise 2.9 • Exercise 2.24 Exercise 2.4 – a) What is the probability of finding oil at all three of the sites? The table below shows the different events and there probabilities Event Symbol Probability The event of finding oil at 1st site A 0.70 The event of finding
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Data Based Decision Making 2 No Child Left Behind When we are faced with making the right decision based on data we have to keep in mind that the leaders is striving for success‚ there are critical moments when they can be problematic‚ perplexed‚ and tense. However‚ the audacious decisions are they are the best
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The population standard deviation σ of a discrete random variable ‚ Measure how close a random variable tends to be the population mean μ‚ so you must understand μ before you understand σ If you have a random variable like a bet at a casino or and investment then the standard deviation σ measure the risk‚ if there is a lot of risk then the standard deviation is high The formulas for standard deviation are given below but you should look at the examples first Population mean Population variance
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united states in 98. A random sample of 50 cities is selected‚ and the highest temperatures are recorded. The data are shown. At a=0.05 can the claim be rejected? a=7.7 97‚ 101‚ 99‚ 99‚ 100‚ 94‚ 87‚ 99‚ 108‚ 93‚ 96‚ 88‚ 98‚ 97‚88‚ 105‚ 97‚ 96‚ 98‚ 102‚ 99‚ 94‚ 96‚ 114‚ 99‚ 96‚ 98‚ 97‚ 91‚ 98‚ 80‚ 95‚ 98‚ 96‚ 80‚ 95‚ 88‚ 99‚ 102‚ 95‚ 101‚ 94‚ 92‚ 99‚ 101‚ 97‚ 94‚ 97‚ 102‚ 61. The claim can be rejected; correct answer may be either above 98 or below it. 2. Salaries for Actuaries nationwide graduates
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A. What is the mean age of this sample? What is the standard deviation? The mean age is 47.5 years old. The standard deviation is 10.74832 years. http://www.calculator.net/standard-deviation-calculator.html Sample Standard Deviation‚ s: 10.748316881702 Sample Standard Variance‚ s2 115.52631578947 Total Numbers‚ N 20 Sum: 950 Mean (Average): 47.5 Population Standard Deviation‚ σ 10.476163419878 Population Standard Variance‚ σ2 109.75 If it follows the normal distribution The
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[Business Decision Making] | [Type the abstract of the document here. The abstract is typically a short summary of the contents of the document. Type the abstract of the document here. The abstract is typically a short summary of the contents of the document.] | Contents Task 1 1 Task 2 7 Task 3 10 Task 4 12 Task 5 18 Reference 20 Task 1 Background A lots of studies shows how IT system works as a enabler rather the just being used as a tool to implement in business Organizations
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Table of Contents Task # 1.1: 4 Introduction: 4 Research 4 Data collection objective: 5 Task 1.2: 6 Survey methodologies: 6 Sampling frame used: 7 Task # 1.3: 7 Questionnaire: 7 Task # 2.1 & 2.2: 8 Data analysis: 8 Task # 2.3: 11 Measures of dispersion: 11 Task # 2.4: 12 Quartile‚ percentile and correlation coefficient calculation: 12 Task # 3.1: 14 Task # 3.2: 16 Task # 3.3: 17 Task # 3.4: 18 Formal business report 18 Task # 4.1: 18 Information processing tools: 18 Task # 4.2: 20 Task # 4.3: 22
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Standard deviation is the square root of the variance (Gravetter & Wallnau‚ 2013). It uses the mean of the distribution as a reference point and measures variability by considering the distance of each score from the mean. It is important to know the standard deviation for a given sample because it gives a measure of the standard‚ or average‚ range from the mean‚ and specifies if the scores are grouped closely around the mean or are widely scattered (Gravetter & Wallnau‚ 2013). The standard deviation
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Data-Based Decision Making Jennifer Rebelo EDC 6103 September 6‚ 2012 According to the Data Quality Campaign of 2011‚ every state now has the opportunity "from parents to policymakers‚ to use data to inform decisions that will improve student outcomes and system performance" (Data for Action‚ 2011). Studies have indicated that 36 states collect and provide information in regards to students past performance‚ and 33 states actually produce reports that measure students’ individual
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BUSINESS DECISION MAKING Short evaluation of a major decision made in an organization in the banking industry (Maybank Malaysia) that has caused a strong impact on the organisation’s performance including the decision making process‚ the models and the impact on the organisation’s performance. BY AHMADRAWI (MALAYSIA) The writer can be contacted at : scholars.assist@gmail.com BY AHMADRAWI (MALAYSIA) The writer can be contacted at : scholars.assist@gmail
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