Tuesday, September 22, 2009

m.a.d.

This one can be tricky. Be sure you know where the "mean" function is...it's on 2nd Stat under "MATH". This is a real time-saver. No one in eighth grade needs to be doing a pencil-and-paper calculation of mean. You do however need to be able to explain how to calculate mean using paper and pencil.

Homework

Covering the Ideas in Lesson 1-7. Time yourself on the calculator part, not the reading. I'll collect the data tomorrow
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17 comments:

  1. goldie locksSeptember 22, 2009 at 4:50 PM

    Mrs. Burke, is it okay that I wrote down what I typed into my calculator as my work for covering the ideas?

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  2. KacieSeptember 23, 2009 at 7:16 AM

    I think that's fine. That's what i did. I had to reread the section a couple times to understand m.a.d. so u calculate it by first getting the mean of all the data, then subtract the data from the mean and take the absolute value of result (which finds the absolute deviation), and then take the mean of the absolute deviations. Does this sound right?

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  3. goldie locksSeptember 23, 2009 at 4:18 PM

    Yes it is... At least I think beacause that's what I did...

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  4. MsmittySeptember 23, 2009 at 5:07 PM

    Does anyone know how to get "X=" on your calculator? I was using my sister's (a TI-84 plus, while mine is TI-84 plus "silver edition") and she had both Y= and X=, and I was curios if anyone knew about that...

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  5. AnonymousSeptember 23, 2009 at 5:30 PM

    oh, i didn't know anything about that. Sorry Msmitty.

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  6. MsmittySeptember 23, 2009 at 6:27 PM

    That's okay, and nice icon by the way :-)

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  7. MsmittySeptember 23, 2009 at 6:29 PM

    This comment has been removed by the author.

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  8. blink-182September 23, 2009 at 7:42 PM

    Theres an x=?

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  9. CorSeptember 23, 2009 at 8:49 PM

    I read section 1.7 and I got the m.a.d, and trouble doing it on my calculator. I just wrote out the tables in my journal. Is this okay?

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  10. CorSeptember 23, 2009 at 8:56 PM

    Msmitty I don't how to get x=. I see if can find it on the calculator.

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  11. miss_tanSeptember 24, 2009 at 4:49 PM

    I NEED HELP WITH 12!!!!!!!! ANYONE

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  12. goldie locksSeptember 24, 2009 at 5:25 PM

    I got number 12 miss tan, so I can help you tomorrow or I will probably call to help you today.

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  13. blink-182September 24, 2009 at 5:45 PM

    i need help with question 12 too.

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  14. goldie locksSeptember 24, 2009 at 8:57 PM

    Okay. I helped miss tan already, but I can help you tomorrow morning before class. : )

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  15. KacieSeptember 25, 2009 at 2:41 PM

    What's the x=?? and hoe do you get it? Oh and what does it do? msmitty you have officially confused me :(

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  16. goldie locksSeptember 27, 2009 at 1:12 PM

    Kacie, msmitty explains what "x=" is for on "end of Chapter 1" post... Just read it there and I think you'll be less confused ;)

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  17. KacieSeptember 29, 2009 at 7:43 PM

    Thanks i did read it and now i am a lot less confused. I've done m.a.d. so many times i feel like a pro :D

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