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MATH 534 Week 8 Discussion

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The descriptive statistics summarize data from a sample, for example, demographicprofiles. Whenever there are several groups, it is useful to provide the descriptivestatistics by group and for the overall sample. This gives a visual impression of thecomparabilityofthe groupsin termoftheir baseline characteristics.Itis notnecessaryto report statistical tests and P-values in such a summary because the main concern isthe comparability of the participants (which reflects the sampling), not the popul...

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MATH 534 Week 7 Discussion; Predictive Analytics

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Predictive analytics in business is an important application of multiple regression analysis.Generallyspeaking,whatismeantbypredictiveanalytics?Asabusinessowner,howcouldyouuseregressionanalysisand predictive analyticsto increase your company'ssales?

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MATH 534 Week 7 Discussion; Predictive Analytics (Keller)

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HelloProfessor&Class, Predictiveanalyticsisaninnovativeanalyticsdivisionthatuseshistoricaldatacombinedwith mathematical simulation, data mining techniques and machine learning to makeforecasts about future results.In order to detect threats and prospects, businessesemploy predictiveanalytics tofindtrendsin thisknowledge. Regression analysis refers to a process of mathematically sorting out which factorscouldhaveaneffect.Forasmallenterprise,thevalueofregressionanalysis isthatithelps decide whic...

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MATH 534 Week 7 Course Project, Final Part C; Regression and Correlation Analysis

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Final Project: Regression and Correlation Analysis Use the dependent variable (labeled Y) and one of the independent variables (labeled X1, X2, and X3) in the data file. Select and use one independent variable throughout this analysis. Use Excel to perform the regression and correlation analysis to answer the following. The week 6 spreadsheet can ... helpful in this work. 1. Generate a scatterplot for the ... dependent variable (Y) and the ... independent variable (X), including the graph of t...

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MATH 534 Week 6 Quiz

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1. Question: A value of -1 for the coefficient of correlation between two variables means that the two variables are _____________. 2. Question: If there is positive correlation between two sets of numbers, then ____________-. 3. Question: If the correlation coefficient between variables X and Y is roughly zero, then ___________. 4. Question: Determine the Pearson product-moment correlation coefficient for the following data. 5. Question: A quality manager is developing a regression model to...

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MATH 534 Week 6 Quiz

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1. Question: A value of -1 for the coefficient of correlation between two variables means that the two variables are _____________. 2. Question: If there is positive correlation between two sets of numbers, then ____________-. 3. Question: If the correlation coefficient between variables X and Y is roughly zero, then ___________. 4. Question: Determine the Pearson product-moment correlation coefficient for the following data. 5. Question: A quality manager is developing a regression model to...

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MATH 534 Week 6 Discussion; Regression Analysis

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Suppose you are given data from a survey showing the IQ of each person interviewed and the IQof his or her mother. That is all the information that you have. Your boss has asked you to puttogether a report showing the relationship between these two variables. What could you present,and why?

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MATH 534 Week 6 Discussion; Regression Analysis (Keller)

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Here,wearetalkingaboutregressionanalysis.Regressionanalysisreferstoa statisticalmethodofmodelingtherelationshipsbetweendifferentvariables(dependentand independent). It is used to describe and analyze relationships between data. Also,the regression analysis is used to make predictions, the relationships between databeingusedasabasis forforecastinganddesigningapredictionmodel. Inthisexample,weareaskedtoputtogetherareportshowingtherelationshipbetweentwovariablesthatarethe IQofeach personandthe IQ...

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