Helping in using linear fitting

[Norah]

Hi everybody,
I hope to find someone can help me,

What are the equations of linear fitting?

Are my equations right?

n.Er + R-\sumI =\sumV

\sumI.Er + R \sum(I.I) =\sum(IV)

Please help me I need it today.:cry:

If there is any website can help me please put it here:confused:

[tiny-tim]

What are the equations of linear fitting?

Are my equations right?

n.Er + R-\sumI =\sumV

\sumI.Er + R \sum(I.I) =\sum(IV)

Hi Norah! Welcome to PF! :smile:

I'm confused … linear fitting of what? :confused:

What branch of maths or physics is this from? :smile: