Quantity Sold Price Advertising

$8500$ $$2$ $$2,800$

$4700$ $$5$ $$200$

$5800$ $$3$ $$400$

$7400$ $$2$ $$500$

$6200$ $$5$ $$3,200$

$7300$ $$3$ $$1,800$

$5600$ $$4$ $$900$

Step $1$: Simple Linear Regression

The question here is: is there a relation between Quantity Sold $($Output$)$ and Advertising $($Input$).$ In other words: can we predict Quantity Sold if we know Advertising?

Step $2$: Multiple Linear Regression

Now here, we want to apply multiple linear regression. The question here is: is there a relation between Quantity Sold $($Output$)$ and Price and Advertising $($Input$).$ In other words: can we predict Quantity Sold if we know Price and Advertising?Step $1$: Simple Linear Regression

The question here is: is there a relation between Quantity

Sold $($Output$)$ and Advertising $($Input$).$ In other words: can

we predict Quantity Sold if we know Advertising?

Step $2$: Multiple Linear Regression

Now here, we want to apply multiple linear regression. The

question here is: is there a relation between Quantity Sold

$($Output$)$ and Price and Advertising $($Input$).$ In other words: can

we predict Quantity Sold if we know Price and Advertising?