everyone so this is are
second video on econometric analysis
and if at any point in this video you want to go back to you
the first introductory video to come much analysis then you can click this
video one button
appear in the top right corner in it will bring you there and I recommend you
watching that video first if you have not seen
so this is sort of a formal introduction to the simple linear regression
I'm we're going to touch on the differences between the population and
sample regressions
discuss interpretation love the model
and what it takes two people to assume causality that we're finally going to
discuss residuals and the division
are coefficients so in the last video we saw a dove
introduced this as
our simple linear regression model why
is equal to you be 20 plus be the one
explicit you in we can call this
our population regression function missus sometimes
denoted as perf and what it is is it are true
am its so true model it's what
why is actually represented its
as in a functional form so this is what we're trying to find
and weak we will never truly know what our population regression function
is but we try our best to find it using
our sample a regression or are
estimated regression so we try our best esta mi this