Aptivaa Consulting Solutions Consultant Interview Questions and Answers

Group Discussion was based on a generic topic, say, Disinvestment, and would revolve around your overall involvement in the team and the discussion.
In a GD, your skills of being in a team and being able to mindfully listen to your team while simultaneously putting up your own viewpoint, are basically looked at.

Q1. How do you interpret the CLRM assumptions?
Ans. 
CLRM assumptions are a set of assumptions that must be met for linear regression models to be valid.
• The errors are normally distributed

• The errors have constant variance (homoscedasticity)

• The errors are independent of each other

• The relationship between the independent and dependent variables is linear

• There is no multicollinearity among the independent variables
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Q2. What do you understand by the terms Multicollinearity and VIF?
Ans. 
Multicollinearity is a phenomenon where independent variables in a regression model are highly correlated. VIF is a measure to detect it.
• Multicollinearity can lead to unstable and unreliable regression coefficients.

• VIF stands for Variance Inflation Factor and is used to measure the degree of multicollinearity.

• A VIF value of 1 indicates no multicollinearity, while a value above 5 or 10 is considered high.

• To address mult...read more
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