BUAL 2650 GUPTA FINAL EXAM QUESTIONS ANSWERED CORRECTLY LATEST

BUAL 2650 GUPTA FINAL EXAM QUESTIONS ANSWERED CORRECTLY LATEST predictive analytics - Answers what will happen descriptive analytics - Answers What has happened? correlation coefficient - Answers measure of linear relationship between 2 variables, x and y, which doesn't depend on units of measurement R squared - Answers the proportion of the total variation in a dependent variable explained by an independent variable lurking variable - Answers unknown variable that hasnt been accounted for equations - Answers actual-predicted Multicollinearity - Answers independent variables are highly correlated p-value alpha - Answers fail to reject p-value alpha - Answers reject Ho null hypothesis (HO) - Answers existing theory or belief, always assumed to be true probability of confidence coefficent - Answers (not rejecting HO | HO is true) critical value - Answers helps determine where the value falls Type I error - Answers rejecting a true null hypothesis assumptions of logistic regression - Answers normality not required, randomization, interdepedence prediction for logistic regression should be - Answers categorical or qualitative not a common value of alpha - Answers .02 seasonal effect - Answers one that repeats at fixed intervals of time, typically a year, month, week, or day Simple Moving Average - Answers a smoothing method based on the idea of averaging random fluctuations in the time series to identify the underlying direction in which the time series is changing which of the following is not an error metrics - Answers mean regression deviation cluster analysis - Answers statistical techniques identify groups of entities that have similar characteristics Discriminant Analysis - Answers classifies objects into predefined classes opportunity loss strategy - Answers minimax regret spam filtering emails is what type of data analysis - Answers classification agglomerative clustering - Answers methods proceed by series of fusions of the n objects into