# Difference between multiple regression and multivariable linear regression?

#### lindsey chan

##### New Member
is there any difference between multiple regression and multiariable linear regression. I tried to google about the latter one,but the results just show me the multiple regression...............

#### hlsmith

##### Not a robit
Multiple linear regression and multivariate linear regression are similar but definitely different.

The former is regression with multiple predictors and a linear outcome.

The latter is the same thing, but you have two or more different linear outcomes.

#### lindsey chan

##### New Member
thanks so much ! so the way to interpret it still the same ? By looking at the p value, odd ratio and 95% C.I.

#### ammar774

##### New Member
@hlsmith, I want to know the practical approach of multivariate regression. my question is that, if we run a multivariate regression with 5 predictors and 2 response variables. how many regression coefficients will be there?
1 - will there be one slope from a predictor to predict two response variables?
2 - or there will be two slopes from one predictor, each for each of the response variables?

#### hlsmith

##### Not a robit
I am not very experienced with Multivariate Modeling. It is my belief that everything is pretty much the same, but there are a bunch of secondary statistics which evaluate how same terms were used on both models, etc. Sorry I am not much more help. @lindsey chan are you sure they used multivariate, some times people accidently use that term erroneously. I am not proud to say a decade ago I publish a paper where I erroneously used the term multivariate in lieu of multiple, though given the methods section, it should have been apparent it was multiple regression.

#### ammar774

##### New Member
I had that experience a year ago. In social sciences paper, I proposed multiple regression model and supervisor took it and repeatedly said it was a multivariate model. Any how I was accredited.

#### ammar774

##### New Member
Most we know about multivariate modeling is doing PCA and running PCR which is much similar to multiple regression modeling.

#### ondansetron

##### TS Contributor
is there any difference between multiple regression and multiariable linear regression. I tried to google about the latter one,but the results just show me the multiple regression...............
Not to complicate it further, but essentially multiple regression can be thought of as the same as multivariable but these are different from multivariate as @hlsmith pointed out.

The latter is multiple outcomes simultaneously where the former is multiple independent variables. (But you could have a univariate multivariable regression [typical cases you see with one Y as a function of >1 X] or you could have multivariate multivariable regression [multiple Y variables simulataneously as a function of >1 X variable].

#### ondansetron

##### TS Contributor
I had that experience a year ago. In social sciences paper, I proposed multiple regression model and supervisor took it and repeatedly said it was a multivariate model. Any how I was accredited.
They were wrong unless you had multiple Y variables (outcomes) analyzed simultaneously. As you later said, PCA is a type of multivariate analysis.

#### hlsmith

##### Not a robit
I didn't know PCA was a form of multivariate regression. I haven't used PCA yet on a actual project. I used factor analysis a long time ago and regularized regression to lessen terms. I am need to incorporate it into my repertoire.