Sanizah’s Notes 02/05/2013 1 sanizah@tmsk.uitm.edu.my 2 CHAPTER 5 CORRELATION AND REGRESSION Introduction Correlation and Regression Scatter Plot/Diagram Coefficient of Correlation Simple Linear Regression sanizah@tmsk.uitm.edu.my Learning objectives • Explain the concept of correlation • Calculate Pearson’s correlation coefficient and interpret the results • Calculate Spearman’s rank correlation for qualitative and quantitative data and interpret the results • Determine the
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Contents TASK 3 4 Primary Research 4 Secondary research 5 Results 6 Introductory questions 6 Main questions 6 Final questions 8 Memo 9 Task 5 10 Correlation 10 Positive correlation 10 Negative correlation 10 No correlation 10 Strengths of correlations 11 Limitations of correlations 11 5 A + B. 11 5C. 12 5D. 13 5E. 13 5F. 13 Task 7A. 14 Total float 14 Free float 14 7B. 14 7C. 15 7D. 15 Reference: 16 Further Reading 16 TASK 3 Primary Research The main objective of the survey was to identify
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sleep you get? To attempt to do so‚ I will gather some sort of data and formula to calculate its results. Since I am trying to find a relationship with my data‚ it would make sense if I would use Pearson’s correlation coefficient formula. With this formula‚ I am able to calculate the correlation coefficient. With this data‚ I am able to see
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The rapid revolution in technology affected our lifestyle drastically and led us to believe that our lives have changed for the better. Now communication with our distant friends or relatives‚ buying branded products or goods on-the-go and conducting business meeting is possible with just a single click. We believe that all these changes have made our lives more comfortable than before. However‚ there is a critical concern that is eating up most parents from inside‚ i.e.‚ whether technology is affecting
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MATH533: Applied Managerial Statistics PROJECT PART C: Regression and Correlation Analysis Using MINITAB perform the regression and correlation analysis for the data on SALES (Y) and CALLS (X)‚ by answering the following questions: 1. Generate a scatterplot for SALES vs. CALLS‚ including the graph of the "best fit" line. Interpret. After interpreting the scatter plot‚ it is evident that the slope of the ‘best fit’ line is positive‚ which indicates that sales amount varies directly
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Correlational Research “Correlation is a statistical technique that can show whether and how strongly pairs of variables are related” (Creative Research Systems‚ 2010). Correlation research method is used in scientific research to study the association and/or relationship between variables. When the association between two variables becomes correlation coefficient‚ it is being calculated through quantitative measure. The goal for using this method is to observe if one or more variables cause
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False Positive vs. False Negative The question of whether or not a false negative is preferable to a false positive depends on the setting. I will use seven scenarios to explain which would be more preferable: a false negative or a false positive. My opinions will be substantiated with examples of practical experience. First I will define a false negative and a false positive respectively. False Negative: A false negative error‚ or in short false negative‚ is where a test result indicates that a
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Positive and Negative Reinforcement Positive Reinforcement Positive and Negative Reinforcement What are Positive Reinforcement and Negative Reinforcemens? Positive and negative reinforcement are used in most of the three theories. Negative reinforcement is used in behaviorism‚ where it involves the removal of an unpleasant stimulus when a desired behavior occurs. Positive Reinforcement is a technique used to increase desired behavior and is used in operant conditioning. Positive reinforcement
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IMC revolutions Whats the sense in using mass media for everyone? It is much easier‚ not effective. The entire industry has changed‚ advertising agency: The Traditional Structure. In the 80s‚ later on in the 90s‚ some mega groups of advertising groups or marcom groups have developed : WPP‚ biggest one. WPP- own fully dozens of companies‚ some of them are doing advertising and some are doing digital marcom‚ some are doing PR Now they can provide a one stop shop for their clients‚ for the client
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Organizing Negative Messages ■ Giving Bad News to Clients and Customers ■ Giving Bad News to Superiors ■ Giving Bad News to Peers and Subordinates CLIENTS AND COSTUMERS The best way to organize a negative message depends on your audience and on the riskiness of the negative information. SYPERIORS Your superior expects you to solve minor problems by yourself. But sometimes‚ solving a problem requires more authority or resources than you have. When you give bad news to a superior‚ also recommend
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