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

What are the benefits of collecting early and how it attempt, What are the ...

What are the benefits of "collecting early" and how do companies attempt to do this? A fund has time value.The sooner money is collected the better.  Companies utilize regional

Explain about baumol model, Q. Explain about Baumol Model? Baumol Model...

Q. Explain about Baumol Model? Baumol Model: - Baumol model is a mechanism of cash management which is used to determine optimum cash balance. Optimum cash balance is resolute

Operating cycle, #questionoperating cycle in vegetable growing business in ...

#questionoperating cycle in vegetable growing business in uganda..

Role depreciation play in calculating incremental cash flows, What role doe...

What role does depreciation play in calculating incremental cash flows? Depreciation expense is a tax deductible expense and hence influences cash flow by its effect on taxes.Dep

Straight line depreciation, Alger Corp wants to buy some construction equip...

Alger Corp wants to buy some construction equipment for $50,000, which has a useful life of 4 years with no salvage value. Alger uses straight-line depreciation. Alger has a tax ra

Company default rate on account receivable when its too low, Can a company ...

Can a company have a default rate on its accounts receivable that is too low?  Explain. A company might have a default rate on AR that would be considered too low if by liberal

Banking sector securities, The banking sector has a vital and active ...

The banking sector has a vital and active role in the money market. The transactions taking place in these securities are large in size, both in terms of volumes

Explain the disadvantages of ifrs 8, Disadvantages of IFRS 8 Recon...

Disadvantages of IFRS 8 Reconciliations may be time consuming. Less comparable with other organisations, as every entity has a different way of running their business.

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