It is open .. it is open to subjectivity, and a lot of that subjectivity is all around the assumptions that you choose to make.

Obviously your rent doesn't increase every month, but I assume it does fairly continuously.

But anyway, don't want to get too complicated.

Because there's 6 exams in the class.

Now imagine if I tell you, all those who are standing,

I'm trying to draw George Washington.

We are in replay mode, however.

If we assume that x does not ever equal 2 because x equaling 2 would make this an undefined statement because you can't divide by zero, but if we make that assumption, we can cancel those out.

Let me illustrate how the Phi coefficient is computed on a simple example.

So I'd have to write negative, we're assuming this is going out,

There really is no correct answer.

Only the ones that are numbered less than k.

So let's imagine, some very hopefully, has done this for us and filled in the matrix with all those values.

Let's suppose it's true.

Because we'll see later in this video that to some degree, that assumption is one of the biggest drivers of assumption.

I now have a house worth 1 million.

So we, often don't know if our variables are normally distributed in the population.

So carbon dioxide is waste for this cell. So it's making some waste and for the moment let's imagine that there's no blood flow.

But the fact remains that I saw I certainly saw right down his sleeve But did you are you sure?

Here's how we do it.

A very simliar to it, is so called expanding photosphere method for supernova.

Again the way this works is we assume that the null is true, then we calculate the probability of a particular outcome.

Or maybe I'm really risk averse, and I put it in government bonds, and I get 4 a year.

This is what I assume about annual maintenance.

So, what's the proof?

I'm sticking for now with the Pearson product moment correlation.

And actually especially after a big real estate boom, may be prudent.

It could actually be 90 as advertised and you were just unlucky, but we believe that high probability of this is correct or is the data actually contradicting this claim and you should complain that the claim is incorrect.

Since PHP 4.3.0, the year parameter is optional and defaults to the current year according to the localtime if ommited.

laugh . It's important though to remember that that's what the P value is.

It is something amazing. It is the best thing, you know.

(Laughter)

And you'll see what I mean because I'll change that assumption in a second.

You decide you want to take a vein and block it off on one end.

(Laughter) Audience member

Suddenly, it's not so hypothetical, is it?

Because it is a little bit of a game.

That's one hell of an assumption.

Let's think about the situation when we have a completely fair coin here

Let us simulate the situation in our IE.

We want the procedure to work on any list, so we shouldn't assume anything about the list that was passed in.

The first is the hypothesis function, and the second is a cost function.

One approach that I'll describe here is

Then I assume you have the location.

And what I want to do