Variables

Previous exam to used in studies 1. a) Heteroskedasticity is a statistical term that refers to differing variance that is if the sequence of random variables has different variances. accompanying correlation or Multicollinearity is a situation where by variables are so highly correlated with each other that it is labored to come up with reliable estimates of their individual regression coefficients. This the Tempter render the inferences of multiple regression equation unreliable because they feed p-values misleading and the regression coefficients; confidence intervals become very broad and may vary dramatically with addition or excommunication of just one. They inflate the variables of parameter estimates that lead to lack of statistical significance. They are detected by examining tolerance which is a broadside of collinearly and variance inflation factor (VIF) which measures impact of collinearly. Regression depth psychology in such situation can be dig b y increasing sample size of your study and by centering variables. 2. a) Expected demand = (8000x0.15) + (9000x0.30) + (12000x0.30) + (14000x0.15) + (16000x0.10) = 11200 units E (profit) = 11200(250-180) 700000 = Sh.

84000 Standard excursion = Square root of variance = 2131 units P ! (profit = 50000) z = avail E (profit) / standard deviation; z is the standard traffic pattern diffusion z = (50000 84000)/ 2131x70 = -0.23 Using the z table, P (profit = 50000) = 0.5 0.0910 = 0.42...If you inadequacy to become a full essay, order it on our website: OrderEssay.net

If you want to get a full information about our service, visit our page: write my essay