13. Variance and Standard Deviation (expected). Using the data from problem 13‚ calculate the variance and standard deviation of the three investments‚ stock‚ corporate bond‚ and government bond. If the estimates for both the probabilities of the economy and the returns in each state of the economy are correct‚ which investment would you choose considering both risk and return? Why? ANSWER Variance of Stock = 0.10 x (0.25 – 0.033)2 + 0.15 x (0.12 – 0.033)2 + 0.50 x (0.04 – 0.033)2 + 0
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Standard Deviation in the Business World QRB/501 Abstract On Standard Deviations in Job Performance The purpose of this study was to compare the expected payoffs from personnel programs based on standard deviation of job performances in dollars‚ the Global Estimation model‚ and the CREPID procedure. The study was done for route salesmen of a large soft drink bottling company. The Global Estimation model and the CREPID procedure were behaviorally based‚ where the standard deviation of job performance
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Standard Deviation use in the Business World Abstract This paper evaluates the role of standard deviation in business. As part of the evaluation‚ a brief summary of five different peer reviewed papers has been presented. Topics such as‚ the purpose of the study‚ the research questions‚ the hypothesis of the study‚ and the main findings of the study for the five papers‚ have been summarized by each of the learning team members. Standard Deviation use in the Business World Standard Deviation
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Data worksheet of the Remington’s Data Set workbook: Mean -3.26 Standard deviation-0.911 Range -3 4 Mean 3.261306533 Standard Error 0.064596309 Median 4 Mode 4 Standard Deviation 0.911243075 Sample Variance 0.830363941 Kurtosis -1.16899198 Skewness -0.663704706 Range 3 Minimum 1 Maximum 4 Sum 649 Count 199 Largest(1) 4 Smallest(1) 1 Confidence Level(95.0%) 0.12738505 Include your calculations in a 1- to 2-page document in which you also do the following: Explain the reasons Remington’s selected
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Standard Deviation objective • Describe standard deviation and it’s importance in biostatistics. Measure of Dispersion • Indicates how widely the scores are dispersed around the central point (or mean.) -Standard deviation Standard Deviation. • The most commonly used method of dispersion in oral hygiene. • The larger the standard deviation‚ the wider the distribution curve. Standard Deviation • SD‚ ‚ (sigma) • Indicates how subjects differ from the average of the group/ the more they
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Why is GDP per capita useful as a measure of living standards? What are the limitations of GDP per capita as a comparable measure of living standards? Gross Domestic Product (GDP) measures the monetary value of final goods and services produced in a given year by factors of production within a country. GDP reports are released on the last day of each quarter‚ reflecting the previous quarter. Therefore‚ it is measured on a quarterly basis and measures the level of economic growth in different countries
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Standard deviation can be difficult to interpret as a single number on its own. Basically‚ a small standard deviation means that the values in a statistical data set are close to the mean of the data set‚ on average‚ and a large standard deviation means that the values in the data set are farther away from the mean‚ on average. The standard deviation measures how concentrated the data are around the mean; the more concentrated‚ the smaller the standard deviation. A small standard deviation can
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Deviation Definition: Behavior commonly seen in children that is the result of some obstacle to normal development such behavior may be commonly understand as negative (a timid child‚ a destructive child) or positive (a quite child)‚ both positive and negative deviation will disappear once the child begins to concentrate on a piece of work freely chosen by him. The physical deforms are easier to identify. This can be by birth due to an accident etc… and most such physical deforms
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Standard Deviation (continued) L.O.: To find the mean and standard deviation from a frequency table. The formula for the standard deviation of a set of data is [pic] Recap question A sample of 60 matchboxes gave the following results for the variable x (the number of matches in a box): [pic]. Calculate the mean and standard deviation for x. Introductory example for finding the mean and standard deviation for a table: The table shows the number of children living
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I ’ll be honest. Standard deviation is a more difficult concept than the others we ’ve covered. And unless you are writing for a specialized‚ professional audience‚ you ’ll probably never use the words "standard deviation" in a story. But that doesn ’t mean you should ignore this concept. The standard deviation is kind of the "mean of the mean‚" and often can help you find the story behind the data. To understand this concept‚ it can help to learn about what statisticians call normal distribution
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