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November 29th, 2008, 08:47 AM   #1
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dummy variable.Help PLEASEEEEEE???????

PLPEASEEEEEEEE HELP????

i can't solve this question it looks so weird to me.


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November 29th, 2008, 05:56 PM   #2
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Re: dummy variable.Help PLEASEEEEEE???????

Do you know what a dummy variable is? Could you come up with a single summy variable that would work with the first 15 lines -- the ones with only types A and B?
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November 30th, 2008, 01:03 AM   #3
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Re: dummy variable.Help PLEASEEEEEE???????

i am not really sure can you explain to me just the first steps if you can?
i am so confused. please???
thank you for your help.
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