Math 534 discussion Study guides, Class notes & Summaries

of a statistic (mean, proportion, or standard deviation, etc.). There is always a risk ofsampling error associated with an estimate. Confidence intervals are useful forestablishing bounds for estimating, in particular, the mean or standard deviation, butalso regression coefficients, proportions, frequency rates, and differences betweenpopulations. Also, a 95% confidence interval indicates that for 19 out of 20 samplestakenfromthesamepopulation,theseintervalswillcontaintheparameterstudied,withama...

Consider when businesses might use confidence intervals to estimate values, such asin sales projections, marketing results, and so forth. Describe a business decision thatcould be helped with confidence intervals. Be specific! Then create a problem withnumbers from which another student could calculate a confidence interval and make adecision.

Consider when businesses might use confidence intervals to estimate values, such asin sales projections, marketing results, and so forth. Describe a business decision thatcould be helped with confidence intervals. Be specific! Then create a problem withnumbers from which another student could calculate a confidence interval and make adecision.

MATH 534 Week 7 Discussion Predictive Analytics Predictive analytics in business is an important application of multiple regression analysis.Generallyspeaking,whatismeantbypredictiveanalytics?Asabusinessowner,howcouldyouuseregressionanalysisand predictive analyticsto increase your company'ssales?

MATH 534 Week 6 Discussion Regression Analysis 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?

MATH 534 Week 5 Discussion; Hypothesis Testing

MATH 534 Week 6 Discussion Regression Analysis (Keller) 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.

MATH 534 Week 8 Discussion 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 reflect...

MATH 534 Week 5 Discussion Hypothesis Testing.

MATH 534 Week 5 Discussion; Hypothesis Testing