Median

Median

It feels like symbols of an old religion.

The station is the middle of the city.

The station is in the center of the city.

The city hall is located at the center of the city.

Middle value in the normal distribution

So if you have an even number of numbers, the median or the middle two, the essentially the arithmetic mean of the middle two, or halfway between the middle two.

So the median is going to be halfway in between 3 and 4, which is going to be 3.5. So the median in this case is 3.5.

This line over here this is the median this right over here is the median.

There is a park in the middle of the city.

The library is in the middle of the city.

Here are four independent proposals to build molten salt reactors and their dates.

Another way is with the median. And this is to pick out the middle number.

So even though 24 isn't one of these numbers, the median is 24.

And I'll do a bunch of videos on margins in the future.

So given that, what's the median of this set of numbers going to be? Let's try to figure it out.

The answer is 3 because 3 has 3 data points and no other value has more than 2.

You're essentially taking the arithmetic mean of these two numbers to find the median.

So I'd like you to give me one of those medians here.

So this is the middle of all of the trees that are less than 21, this is the middle age for all of the trees that are greater or older than 21.

let's look at the lecture based classroom, and let's pick the median performance as a threshold.

But the problem with it is it's not unique.

Let me explain it to you this way the mid ..

The other very typical way is the median. And I will write median. I'm running out of colors.

Just to practice this idea, here's little quiztistics. Here's a sorted list of two digit numbers.

Half of them gave over the Internet.

Next column is standard deviation that is a measure of variability that we'll talk about in detail in a moment.

What is the range of tree ages that he surved?

You can even see it.

So if you were to order all the numbers in your set and find the middle one, then that is your median.

The median is really good if you have some kind of crazy number out here that could have otherwise skewed the arithmetic mean.

The park lies in the center of the city.

The park is located in the center of the city.

The park is in the center of the city.

And the best thing that we as humans have been to be able to come up with is a market.

Ben has actually done a good job of saying the market value of his inventory, the market value of his equipment.

3, 9, 3, 8, 2, 9, 1, 9, 2, and 4.

It'll be worth twice as much to us on the black market.

The well is in the middle of this plaza.

The mean is always precisely determined.

That's what? 114 2 which is 57.

And hopefully this is reviewed to you, but if not take the time to go through this.

As an architect, it's really hard to set the agenda.

Well, here we have five numbers. We have an odd number of numbers. So it's easier to pick out a middle.