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# Model with great impact on multple linear regression

Hello!

Can anyone help me to identify how can I predict the most influential variable impacting the model in linear regression.

Which statistic or method I need to refer for this

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Solution
‎11-25-2016 07:13 PM
Super User
Posts: 10,207

## Re: Model with great impact on multple linear regression

Check ANOVA table, the variable which has the smallest P-value should be the most significant variable.

Or check the largest T-value .

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Posts: 5,049

## Re: Model with great impact on multple linear regression

Look at measures of variable importance in proc adaptivereg and proc pls.

PG
Solution
‎11-25-2016 07:13 PM
Super User
Posts: 10,207

## Re: Model with great impact on multple linear regression

Check ANOVA table, the variable which has the smallest P-value should be the most significant variable.

Or check the largest T-value .

Contributor
Posts: 56

## Re: Model with great impact on multple linear regression

Hello Ksharp

Thanks for the reply. You mean smallest value or largest t value would have greatest impact or significance to the dependant variable. What about coeff var?

Sameer

Super User
Posts: 10,207

## Re: Model with great impact on multple linear regression

```No. The coefficient of variable only measure how much Y will change when X change one unit.

Y(x+1)-Y(x)=beta(x+1)-beta*x=beta

It doesn't measure the importance of variable to the model.
```
Contributor
Posts: 56

## Re: Model with great impact on multple linear regression

Thanks for the help

☑ This topic is solved.