Inspect the residual plot to check for heteroscedasticity and report your conclusions.
Answer to relevant QuestionsUse MegaStat or MINITAB to generate 95 percent confidence and prediction intervals for various X-values. In the following regression, X = weekly pay, Y = income tax withheld, and n = 35 McDonald's employees. (a) Write the fitted regression equation. (b) State the degrees of freedom for a two- tailed test for zero slope, and use ...Choose one of these three data sets. (a) Make a scatter plot. (b) Let Excel estimate the regression line, with fitted equation and R2. (c) Describe the t of the regression. (d) Write the fitted regression equation and ...Below are results of a regression of Y = average stock returns (in percent) as a function of X = average price/earnings ratios for the period 19491997 (49 years). Separate regressions were done for various holding periods ...An agribusiness performed a regression of wheat yield (bushels per acre) using observations on 25 test plots with four predictors (rainfall, fertilizer, soil acidity, hours of sun). The standard error was 1.17 bushels. Find ...
Post your question