Size of the total population

So the population is just the entire collection of cases or people that we would like to generalize about in our research.

Population size

Calm down. Put your mind at ease.

Number of success overall

A patient of this institution.

Standard deviation for the total population

And suppose that there are only 300 certified wine experts in the entire world.

You're headed for more trouble than you can possibly understand, Sean.

However, not everyone understood the importance of our mission.

And in those examples, it's important that you understand the difference between a population and a sample.

The main argument against group selection has always been that, well sure, it would be nice to have a group of cooperators, but as soon as you have a group of cooperators, they're just going to get taken over by free riders, individuals that are going to exploit the hard work of the others.

Sampling error clearly depends on the size of the sample so, and, but also the degree of variance in the population.

And they took a group of physicians.

We give them some insight into what choices they can make, what actions they can take.

And we always have to deal with this whenever we engage in this process of trying to get a random and representative sample from the population.

We need to interview the patients who were in Rachel's group therapy session.

You are now among the elite.

There's a bubble.

In order to survive Humans have had to organise themselves.

So there's a 95 chance that this is true.

It's also important to know the distinction between parameter and statistic.

We're getting random representative samples from the population to estimate those population parameters.

They'll fluctuate, right.

I am looking for a patient in Intensive Care

If we just know that the probability of success is p and the probability a failure is 1 minus p.

In general, communication between doctors and their patients is the most important part of medical treatment.

Mommy was a book editor in New York City when her and Daddy met.

If it's one of my patients

What? My mother was an asthmatic.

I did that once here, and we saw that the mean was about six, right?

And, there's a standard deviation of the distribution of sample means, standard air.

Remember from the first lecture, we often don't know the population parameters, that's why we're doing the research.

A group of teenagers robbed me of my money.

And we have to duke it out every day, so we resort to politics.

Well, what do you think i've got here now?

We have isolated one patient from the rest.

A bunch of dirt?

I heard it's a pretty bad outbreak.

The crowd was moving in a solid body.

Now, the reason we knew that was because we spent the previous 10 years studying tribes, studying these naturally occurring groups.

So there's a little bit of sampling error.

And many of you were doing what great, if you will, tribal leaders do, which is to find someone who is a member of a tribe, and to find someone else who is another member of a different tribe, and make introductions.

So we talk about PMTCT, and we refer to PMTCT, prevention of mother to child transmission.

The collection is open to the public.