The line of 25.2 0.67x y.

So the correlation is a positive.22.

And words, it just means.

Tropic of Cancer

Tropic of Capricorn

And the answer is W0 0.5, and W1 0.9.

And I would argue this is a clear linear regression case, you have two variables, so this is what you're going to do.

large errors count much, much more than small errors.

But somehow adding that example out there caused linear regression to change in straight line fit to the data from this magenta line out here to this blue line over here, and caused it to give us a worse hypothesis.

But the average is about 50 years old in this sample.

In this particular example, it

Not just the mean.

First what I'd like to show you is just, what do I mean by linear and nonlinear.

Now, as a good statistician, what do we do?

Clearly a linear regression model is a very poor one to explain this data over here.

Let's look at some examples.

So, this term here.

So why do we need yet another learning algorithm?

But you see this person actually almost aced the SAT.

Oh boy.

And then we just do the second part.

You know, you can end up here or here.

They move they go up, they go down.

In the original version of

Projectively rotate with this half line

Let me be more accurate.

And indeed that's what we see.

So let's dive straight in so let's talk about lines and let's talk about the technology to fit lines to data called linear regression.

Y is either zero or one, but if you are using

Therefore, 4b 1 and then we divided by 4, which means b equals to fourth or quarter and 0.25 and 1 other correct answers here.

The relationship between two variables at the level of a sample.

So let's look into this with examples for the following four data points, which of these lines has the smallest quadratic error and would be the best regression line pick one of the three.

A nice visual composition of symmetry.

There is a big difference between linear and exponential growth.

This is the quadratic error between our target tables and what our best hypothesis can produce.

It's got straight lines.

Lines

line

Straight

Right

Line

And taking gradient descent, and the square cost function, and putting them together. That will give us our first

That took me to this wet and warm band of the tropics that encircles the Earth.

So again, by way this clearing up terminology in confusion over notation again, as I've said I've topped this, this material many, many times and students get confused sometimes over notation.

A line constructed through a point, perpendicular to another line or segment.