Useful and consistent and in a little bit, we'll
#EASY RANDOM DRAWING GENERATOR GENERATOR#
Random number generator and it could even pick out a random number between one and 80 including one and 80 is you would maybe line up all the students' names alphabetically and so the first student alphabetically assigned the number 01 and you could just say one if you're using a random number generator but I'll use two digits for it just because it'll be Make sure that you have an even chance of picking certain numbers but what you would do in this situation if you had access to some Have to be very careful on how you use this to It might give you a numberīetween zero and one or zero and 100 and you You might see, you might see something like random without anything passed into it. Something like a math.rand Rand's short for random.
Tend to be something, someplace you'll see Other ways that you could do it, if you have a computer or a calculator, you could use a random number generator and the random functions onĬomputer programming languages on your calculator, they And those 30 names that you pick, that would be your simple random sample and then you could measure their heights to estimate the average And so all the pieces of paper go in there and then you put a blindfold on someone and they can't feel what names are there and so they should pick out the first 30 without replacing them because you obviouslyĭon't wanna pick the same, you don't wanna pick So I'll try to draw a little, I don't know, that looks likeĪ fish bowl or something. Very basic way of doing it but it's actually a pretty effective way of getting a simple, of getting a simple random sample. They all should be the same size and then you throw them all, you throw them all intoĪ bowl of some kind and this seems like a Paper gets the next person and you're gonna go all the way down so you're gonna have 80 pieces of paper. They're on a slip of paper then the next slip of So let's say this is alphabetically the first person in the school. One way to do it is associate every person in your school with a piece of paperĪnd put 'em all in a bowl and then pick 'em out so let's do that. Select those 30 students and how do I select it so that I feel good that it is actually random? And there's several ways So once you decide to do this, you say, well, how do I Take their average height and say, well, that's probablyĪ pretty good estimate for the population parameter for the average height You think it's reasonableįor you to measure the heights of 30 of these students and so what you wannaĭo is randomly sample 30 of the 80 students and
The height of all 80 students so you decide to find a simple or take a simple random sample. You think it's too hard for you to go and measure Of the average height in your population and So there's 80 students in your population and you wanna get an estimate Let's say that your school has a population of 80 students in it.
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