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Heteroskedasticity is a problem with the        a. dependant variables        b. independent vriables...

Heteroskedasticity is a problem with the

       a. dependant variables

       b. independent vriables

       c. the error term

       d. the choice of variables and what has been ommitted

Does ommitting a variable in our regression always cause OMMITTED VARIABLE BIAS

       a. Yes

       b. “Yes, if the R^2 is low"

       c. No

       d. “Yes, if the R^2 is high"

Imperfect multicolinearity

       a. affects the standard errors

       b. affects the Y variable

       c. affects the values of the X variable

       d. requires the correlation between two variables to be either -1 or 1

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