Wednesday, May 19, 2010

Range and Outliers

Range -

The positive difference between the largest and smallest values in a data set

Eg. 6, 2, 9, 4, 3 - data set

2, 3, 4, 6, 9 - ordered from least to greatest

9 - 2 = 7

The range is 7

Eg. -8, -1, -3, -5

-8, -5, -3, -1

(-1) - (18) = 7

The range is 7

Outliers -

A value that is much smaller or larger than the other data values

A data set man have one or more outliers or no outliers

* In other words, it's just like finding something that doesn't belong

*In this case, you are looking for numbers that have a big difference between the other numbers


Find the range-

a) 7, 4, 3, 6, 2, 5, 8, 3

2, 3, 3, 4, 5, 6, 7, 8

8 - 2 = 6

The range is 6


b) 11, 8, 8, 5, 7, 6, 7, 6, 6

5, 6, 6, 6, 7, 7, 8, 8, 11

11 - 5 = 6

The range is 6


c) -4, 3, -1 , 0, 2

-4, -1, 0, 2, 3

3 - (-4) = 7

The range is 7


Find the outliers-

a) 18, 19, 79, 17, 20, 12 - 12, 17, 18, 19, 20, 79 - The range is 79

b) 14, 14, 16, 15, 1, 16 - 1, 14, 14, 15, 16, 16 - The range is 1

c) 98, 202, 99, 91, 2, 95, 89, 88, 94 - 2, 88, 89, 91, 94, 95, 98, 99, 202 - The range is 2 and 202


Page 437 - 439, # 1- 16 .... IS HOMEWORK!
*Reminder.. there is a math quiz tomorrow on Number of The Day, all 25 questions!

21 comments:

  1. Nice post Kristel. :) I understood the process of the steps. There wasn't any mistakes, so keep up the good work Kristel. :)

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  2. Excellent job Kristel! Your whole post made sense and it included all the notes from class. I like how at the end of your post for the reminder you made the words big and bright. Great job Kristel!(:

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  3. 要保持更新呦,加油!!!期待你的新文章!!! .........................................

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  4. Great job Kristel! Your post was very understandable and you talked about what we learned in class. I liked the colours you used and I liked how you reminded us about the test. Keep up the good work:)

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  5. DUDETTE! I liked how you put the homework we had to do. You also used your colours,font, and letter size wisley.

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  6. Good Job!I liked the colors and I really thought it was smart of you to put the reminder:)

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  7. Good job Kristel! You included all the notes and even a reminder. Maybe next time you should try using more colour but everything else was excellent. (:

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  8. Great job, Kristel! You're explanations were easy to understand and I really enjoyed all the different colours you used to show the importance of a word. But next time try to put a link and a video.

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  9. Nice job! your post was nice and clear and well put. Your explanations were good and i liked the reminder for the homework, it is big and easy to read :)

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  10. Good Job Kristel ! I understood everything so very good job! But maybe you should show us a picture or a video next time, but either than that GOOD JOB

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  11. Good Job! Everything was explained very well but you could have put one picture. Other then that Good Job!

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  12. Good job! Everything was included that we learned, and it was easy to understand. I liked your reminder about the homework. You could have added a link or a video, but other than that, great post!

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  13. Good Job Kristel ! Everything was easy to understand. I liked your reminder about doing the homework. The one thing that you could of done was maybe putting a link or a vido. Anyways Excellent Job ! :]

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  14. Good job Kristel as always. You did a really good job at the end by making it bright. Nothing's good with an awesome ending like yours.
    -Sophia
    p.s. thanks for being my friend:)

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  15. Great job Kristel. Your post was very easy to read, yet very informative. It had colour were it was needed (titles, the reminder), and I liked that. I did find a few mistakes. The part about outliers; it said 'the range is' instead of 'the outlier is'. Other than that, great job! :)

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  16. good job kristel you did a good job on the colour. next time put a picture and a video.

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  17. great job kristale it was really good and you included all the note we took i really liked it!!!:)

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  18. This post was easy to read and helped me understand it. Like Meldrick I saw that mistake. Good job.

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  19. Good post Kristel(: I like how you added some colour and you examples on each term. Next time, try to find a video.

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  20. I love it, kristel! You put lots of color and I dont think you missed anything. In some places you need to put the text size bigger. Good Job!! <3<3<3

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