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Old 09-09-2007, 08:41 PM   #1
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Default Dumb but easy question, math related

State the population, sample and variable:

A medical laboratory technician counts the number of white blood cells in a patient's blood.

We are suppose to do a reading, which doesn't talk about population / sample / variables and then do a worksheet. This is just the first problem of a few. But in class we only went over population and sample, not variable. So if anyone could either define and give the answer or just give the answer it would probably help.
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Old 09-09-2007, 09:07 PM   #2
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Default Re: Dumb but easy question, math related

What is a variable?

For math a variable can be anything that represents the unknown.
such as x^2= 14. We don't know the value of x(varaible) atm, but we can input 7 for x and multiply it by 2. That gives us 14 and our answer.

Source: college math and that above is very simple.
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Old 09-09-2007, 09:33 PM   #3
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Default Re: Dumb but easy question, math related

Isn't the variable the thing that makes it change or something?
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Old 09-09-2007, 09:36 PM   #4
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Default Re: Dumb but easy question, math related

I have no clue what the variable is, a basic math definition I think doesn't fit for this example, and variable isn't even defined or used in my statistics book / glossary.
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Old 09-09-2007, 09:54 PM   #5
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Default Re: Dumb but easy question, math related

http://www.mathleague.com/help/algeb....htm#variables
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Old 09-09-2007, 09:58 PM   #6
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Default Re: Dumb but easy question, math related

Quote:
Originally Posted by BF2player View Post
What is a variable?

For math a variable can be anything that represents the unknown.
such as x^2= 14. We don't know the value of x(varaible) atm, but we can input 7 for x and multiply it by 2. That gives us 14 and our answer.

Source: college math and that above is very simple.
7^2 is 49 not 14, 7*2 is 14.

But BGates is it asking for like independent variable and dependent variable? Independent is the variable that you change, dependent is what changes when you change the independent(its dependent on the independent.) I hope that makes sense to you...So in a math problem like x^2=49 the x would be the independent and the 49 would be the dependent since if you change x to a different number the answer(49) will change.
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Old 09-09-2007, 10:01 PM   #7
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Default Re: Dumb but easy question, math related

http://www1.eboard.com/eboard/servle...&TAB_ID=437762

Click that and then scroll to the bottom and click on populationsamplews.doc that's the exact worksheet I'm getting this from.
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Old 09-09-2007, 10:23 PM   #8
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Default Re: Dumb but easy question, math related

I'm scared its going to be another one of those things lol j.k j.k

Aw F I forgot I don't have word.

This sucks I'm going to need 07 for vista for school.
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Old 09-09-2007, 10:27 PM   #9
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Default Re: Dumb but easy question, math related

Well the first problem is the one I really want answered, all the rest I can pretty much base off of that one. But I get this from it:

Variable: White Blood Cells
Population: Medical Laboratory Technician
Sample: Patients Blood

You can open it with wordpad or notepad haha.
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Old 09-09-2007, 10:32 PM   #10
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Default Re: Dumb but easy question, math related

lol yeah but i still need word for school work.
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