Regression analysis
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Choose the dependent and independent variable. Use Megastat or minitab to obtain the bivariate regression and required graphs.
a) Inspect the residual ploot to check for heteroscedeasticity and report your conclusions
b) is an autocorrelation test appropiate for your data? If so, perform one or more tests of the residuals (eyeball inspection of residual plot against observation order, runs test, and/or Durbin-Watson test)
c) use Megastat or Minitab to generate 95 percent confidence and prediction intervals for various X values
d) Use Megastat or Minitab to identify observation with high leverage
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Solution Summary
The solution provides step by step method for the calculation of regression model . Formula for the calculation and Interpretations of the results are also included.
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