And that's true of Z distributions, the mean is zero. We can take that Z score and then convert it into a percentile rank.

So I can't do very fancy things with it.

Normal controls show that was the magic I showed you now I'm showing it to you in graphical form

And why is that?

Ranks.

So we're definitely talking highend.

Agraders Masters Cgraders Slaves

We've No, first of all, New York Magazine always gets it.

This song is No. 1 on the hit chart.

3 months ago, on the final day of my training,

Let's say that they're B I don't know, all these ratings have different terminology.

There's one little bit left we haven't used those ranks, so one of the questions on your homework will be using the ranks to get the best result.

So instead of giving 10 , they cut out 1 to insure it.

I'm just kind of making this up on the fly.

Yes, this grading system is like a caste system

This is the result that has been replicated over and over again.

But as I said multiple times, I can't do it, because they are BB rated.

Still feeling cocky, Mr. Milwaukee?

He said, You're in the championship again.

Any weight you want just as long as they are not negative or zero.

So now your risk is really a Double A risk and not a Double

Yeah, you know, not like street level. Higher.

This is like high school chemistry class, right?

One desperate grief cures with another's languish Take thou some new infection to thy eye,

Hey, these guys are good for their money, they're Double A or whatever.

And so I'm fine.

And another case, we have a smaller version of the same problem.

Kind of interesting maybe but a slightly counter intuitive problem.

Such a situation is easily addressed by what's called principal component analysis, or PCA.

Now, it doesn't have to be that way. It really doesn't.

You can imagine these apples are web pages, and you can imagine an orange would be an image.

I want every street... every house... every backyard.

And rank does have its little privileges, sir.

Because I said, you know what even if corporation A goes under, I have this AA guy insuring it.

and then rated women based on their hotness.

I made it to the final, and I won the World Cup in a higher category than my own.

So we're going to give these what they call, let's say they say AAA rating.

All right, all right, all right.

We're going to go through every page that contains the keyword, and we're just going to find the page with the maximum rank.

You know certainly when I was growing up what we thought was the way to get on was to compete.

Every evil.

All right, all right, all right.

And so the ratings agencies, Standard and Poor's and

This is what they think about my site it's ranked by blog authority.

And of course, the same is true for the blue data points.