Qualitative data can be incorporated into linear regression models using indicator variables.
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Q11: A qualitative variable which represents categories such
Q12: A logarithmic transformation may be applied to
Q13: If a qualitative variable has c categories,
Q14: If a square-transformation is applied to a
Q15: The regression model y =
Q17: If a data set contains k independent
Q18: If a qualitative variable has c categories,
Q19: The interaction between two independent variables can
Q20: The regression model y =
Q21: We may use logistic regression when the
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