EXECUTIVE SUMMARY This market research report is provided by the researchers and consultant of Acorn Co. Ltd‚ a marketing and research consultant company in Vietnam. The purposes of this report are to find out customers’ assessment of Lotteria products‚ services and the market demand in order to help Lotteria improves their products and services to satisfy customers more and more. By using primary data and secondary data‚ we can collect the satisfaction level of Lotteria customers and other demographic
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statistics Mean: 2 Median: 2 sum of squared deviations: 56 Variance: 2.8 standard deviation: 1.67332 12. Calculate descriptive statistics Mean: 1‚112 the mean is 56.5; 1‚1245 the mean is 123; 1‚1361 the mean is 181; 1‚1372 the mean is 186.5; 1‚1472 the mean is 236.5 Median: 1‚112 the median is 56.5; 1‚1245 the median is 123; 1‚1361 the median is 181; 1‚372 the median is 186.5; 1‚1472 the median is 236.5 sum of squared deviations: 1‚112 is 6160.5; 1‚1245 is 29768; 1‚361 is 64800;
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291.00 up to $15‚906.00 for the period of the said year. Its average price is $6‚165.26 with a standard deviation of $2‚949.50. It can be seen that prices are not close by to one another. With regards to mileage‚ the majority of the automobiles runs 41 miles for every gallon of gasoline‚ while the least runs only for 12 miles. The mean of mileage has resulted to 21.30 mpg‚ with a standard deviation of 5.79 mpg. As to the variable repair record it can be seen that only 69 were observed out of the 74
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Recession 0.1 5.5% -27.0% 27% 6% -17% 0% Below Average 0.2 5.5% -7% 13% -14% -3% Average 0.4 5.5% 15% 0 3% 10% 7.50% Above Average 0.2 5.5% 30% -11% 41% 25% Boom 0.1 5.5% 45% -21% 26% 38% 12% r(hat) - expected return 1.00% 9.80% 10.50% σ (std deviation) 0.0% 13.20% 18.80% 15.20% 3.40% CV 13.20% 1.90% 1.4% 0.50% beta -0.87% 88.00% CDIB’s economic forecasting staff has developed probability estimates for the state of the economy; and its security analysts have developed a sophisticated
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Practice Problems and Exams 1 The Islamic University of Gaza Faculty of Commerce Department of Economics and Political Sciences An Introduction to Statistics Course (ECOE 1302) Spring Semester 2009-2010 Chapter 1 - Introduction and Data Collection Practice Exam - Solution Instructors: Dr. Samir Safi Mr. Ibrahim Abed SECTION I: MULTIPLE-CHOICE 1. The universe or "totality of items or things" under consideration is called a) a sample. b) a population. c) a parameter. d) a statistic. 2. A summary
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measure is the standard deviation. Standard Deviation: It is a measure of the values of the variables around its mean or it is the square root of the sum of the squared deviations from the mean divided by the number of observances. The arithmetic mean of the returns may be same for two companies but the returns may vary widely. This can be illustrated with an example. Now let us take two companies A and B to calculate the expected returns. COMPANY A standard deviation is affected by the association
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standard deviation of the probability distribution created by rolling a die. Either show work or explain how your answer was calculated. Descriptive Statistics: Die1 Variable Mean StDevDie1 3.450 1.317Mean: 3.50 Standard deviation: 1.317Calculations were derived by using the minitab and going into the Stat > Basic Statistics > Display Descriptive Statistics > Variables than select the C14 (Die1) > below enter the statistics and check mark only mean and standard deviation >
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whether the process is operating satisfactorily or corrective actions needs to be taken. Summary of Statistics Sample 1 Sample 2 Sample 3 Sample 4 Mean 11.96 12.10 12.14 12.15 Standard Error 0.04 0.04 0.04 0.02 Standard Deviation 0.22 0.23 0.23 0.16 Sample Variance 0.05 0.05 0.05 0.03 Sum 358.69 362.90 364.08 364.46 From the summary of statistics we can see that mean has an upward trend. Mean value differ from sample to sample. Here we can observe that mean
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QUANTITATIVE INVESTMENT ANALYSIS WORKBOOK Second Edition Richard A. DeFusco‚ CFA Dennis W. McLeavey‚ CFA Jerald E. Pinto‚ CFA David E. Runkle‚ CFA John Wiley & Sons‚ Inc. QUANTITATIVE INVESTMENT ANALYSIS WORKBOOK CFA Institute is the premier association for investment professionals around the world‚ with over 85‚000 members in 129 countries. Since 1963 the organization has developed and administered the renowned Chartered Financial Analyst Program. With a rich history of leading
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predictive statistical research. Standard deviation is a measure of the data spread and it is signified by the Greek letter sigma (σ). The standard deviation requires calculation of the average‚ compare each respondent’s value to the average‚ and square that difference (Burns & Bush‚ 2012‚ pg. 252). Therefore‚ the formula for standard deviation is the square root of the variance. The variance is the average of the squared differences of the mean. The standard deviation explains the density of data scattered
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