Multicollinearity, Financial Management

Assignment Help:

 

Multicollinearity

As the degree of correlation between the independent variables increases, the regression coefficients become less reliable. That is, although the independent variables may together explain the dependent variable, but because of multicollinearity the coefficients of the explanatory variables may be rejected. It can happen that the model may be accepted (through ANOVA and the F test), but the individual coefficients may be rejected (through the t test). This is because the interplay among the independent variables reduces the influence of the individual variables in the model. In the extreme case, if two variables are identical, then the influence of each one in the model would be reduced. Multicollinearity does not reduce the accuracy of the model (the predictive powers), but it hurts any sensitivity analysis - if we increase one explanatory variable by one unit, what happens?

This is a subject in itself, but the reader should be aware of the importance of multicollinearity.

Multiple Correlation Coefficients

 

So far we have come across correlation coefficients between two variables X and Y. However in the case of a multiple regression equation like

                   Y = a + b1 X1 + b2 X2

we see that Y can be correlated to both X1 and X2. Hence we can have a coefficient of multiple correlation which will measure the correlation between Y and both X1 and X2.

 

 

 


Related Discussions:- Multicollinearity

Explain basril plc, BASRIL PLC (a) (i) Analysis of projects assum...

BASRIL PLC (a) (i) Analysis of projects assume they are divisible. Project 2 NPV at 12% = (140800 × 3·605) - 450000 = $57584 Project 2 profitability index = 5

Noi approach, Two companies are identical in all aspects except in the debt...

Two companies are identical in all aspects except in the debt-equity profile. Company X has 14% debentures worth Rs. 25,00,000 whereas company Y does not have any debt. Both compan

Pay back period (pbp) , Pay Back Period (PBP) : This is the most popula...

Pay Back Period (PBP) : This is the most popular method employed by industrial practitioners for ranking investment projects. This is described as the "period required for a pr

Stock exchange, Working and function of stock exchange

Working and function of stock exchange

Operating cycle, Define operating cycle and long and short operating cycle?...

Define operating cycle and long and short operating cycle? Use of operating cycle? Can someone give me assistance on these questions??

Budget classification on the basis of flexibility, ON THE BASIS OF FLEXIBIL...

ON THE BASIS OF FLEXIBILITY • Fixed budget: this is designed to stay unchanged irrespective of the volume of output or turnover attained.  The budget remains unchanged over

Which ratios would a banker be most interested, Which ratios would a banker...

Which ratios would a banker be most interested in when considering whether to approve an application for a short-term business loan? Explain. Bankers and other lenders use liq

Currency swap, How exchange of principal and interest in one currency? E...

How exchange of principal and interest in one currency? Expalin

Buying and selling securities, Buying and Selling Securities One of the k...

Buying and Selling Securities One of the key features that may occur while investing in financial markets is that sometimes investors overlook the essential factors they should c

Determine the cost of capital in emerging nation, How can we measure a comp...

How can we measure a company's cost of capital in emerging nations, especially when there is no state bond which we could take as a reference? Although there is no state bond w

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd