When the Error Variance Is Nonconstant,it Is Common to See

question 39

Multiple Choice

When the error variance is nonconstant,it is common to see the variation increases as the explanatory variable increases (you will see a "fan shape" in the scatterplot) .There are two ways you can deal with this phenomenon.These are

• A)the weighted least squares and a logarithmic transformation.
• B)the partial F and a logarithmic transformation.
• C)the weighted least squares and the partial F.
• D)stepwise regression and the partial F.