1. A recent issue of Fortune Magazine reported that the following companies had the lowest sales per employee among the Fortune 500 companies. [20 Marks] | |Company |Sales per Employee ($1000s) |Sales Rank | | |Seagate Technology |$42.20 |285 | | |SSMC | 42.19
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G036 * Yes because the p-value is less than 0.05 or No‚ because the p-value is greater than 0.05 * The coefficient of variation is the standard deviation of a data set‚ divided by the mean of the same data set. * Z score = x -ms * The Independent part is what you‚ the experimenter‚ changes or enacts in order to do your experiment. The dependent variable is what changes when the independent variable changes - the dependent variable depends on the outcome of the independent variable
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Random Sample: each member of the population has the same chance of being selected Representative Sample: characteristics should represent those of the target population without bias Observational Study: no intervention by the investigator‚ no treatment imposed Experimental Study: investigator has some control over the determinant Variables: Categorical – each observation falls into a finite number of groups Nominal: named variables with no implied order e.g. personality type Ordinal:
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Harrisburg High school was bully central. 75% of all students were either being bullied or doing the bullying‚ unaware of the damage being done. Students who bully are some of the leading causes of death due to suicide by those bullied. The effects on teenagers are possible suicide and low self-esteem‚ one possible solution would be counseling for those who bully. To begin‚ an effect of bullying on teenagers is possible suicide. Kayla Marcella would be 19 years old this year .Marcella committed
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GMB 713 PROBLEM SET NO. 2 PROBLEM SOLVING: Solve the following problems. Show all pertinent solutions. 1. A car battery dealer is trying to determine which of the brands of car battery he is selling has a longer life span. He conducted an investigation by interview his customers and was able to get the following results: Brand X Brand Y Mean life span 4.5 years 4.9 years Standard deviation
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Math 221 Quiz Review for Weeks 3 and 4 1. State whether the variable is discrete or continuous. The # of keys on each student’s key chain. 2. Decide whether the experiment is a binomial experiment. Explain why by citing the properties of binomial experiments. Testing a pain reliever using 20 people to determine if it is effective. The random variable represents the number of people who find the pain reliever to be effective. 3. Use the binomial probability distribution to answer the following
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NAME: SHU ZHAOHUI ID: 17329164 Q5. Descriptive Statistics | | N | Minimum | Maximum | Mean | Std. Deviation | Skewness | | Statistic | Statistic | Statistic | Statistic | Statistic | Statistic | Std. Error | Gasolinescore | 1000 | 3.00 | 21.00 | 14.9090 | 4.83654 | -.493 | .077 | Globalscore | 1000 | 3.00 | 21.00 | 17.0490 | 3.78774 | -1.073 | .077 | Valid N (listwise) | 1000 | | | | | | | The mean in the gaslinescore and globalscore stand for the average the respondents choose is
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qualities that somehow merit noticeable recognition. Some listeners might point out that the song became a hit because of its good rhythm‚ while others will claim that it was due to its melody. In reality‚ however‚ this might not necessarily be the case. For every song that becomes a mainstream hit‚ chances are that there are a countless number of similar songs that go completely unrecognized. This raises a question‚ who is controlling the music market? The truth of the matter is that‚ for the
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12/21/2013 VIETNAM NATIONAL UNIVERSITY – HOCHIMINH CITY INTERNATIONAL UNIVERSITY SCHOOL OF BUSINESS ADMINISTRATION ------o0o------ CHAPTER 14: CHI-SQUARE TESTING STATISTICS FOR BUSINESS TAs: Vo Vuong Van Anh‚ Le Phuoc Thien Thanh‚ and Le Nhat Ho December 21‚ 2013 TABLE OF CONTENTS • PART I: CHI-SQUARE TESTING FOR GOODNESS-OF-FIT. • PART II: CHI-SQUARE TESTING FOR NORMAL DISTRIBUTION. • PART III: CHI-SQUARE TESTING FOR INDEPENDENCE. December 2013 Powered by Vo Vuong Van Anh 2 1 12/21/2013
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INTRODUCTION Statistics and mathematics are everything to economics. infact statistics and Mathematics‚ the economic field wouldn’t even exist. Economist need statistics to represent data‚ to track and store information‚ to identify trends‚ to attribute value and mathematics to calculate those figures.The way to look at the relationship between statistics and economics is that economics is essentially the study of human decisions and trends‚ and how these have a financial impact. Economists
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