## Wednesday, May 19, 2010

### Range & Outliers

Range - The positive difference between the largest and smallest values in a set of data.

To find the range:

First, you have to reorder the numbers from least to greatest.
Second, you have to subtract the least number from the greatest number.

Eg.
1. Set of data: 6, 2, 9, 4, 3
a) 2, 3, 4, 6, 9
b) 9 - 2 = 7
Therefore, the range is 7.

1. Set of data: -8, -1, -3, -5
a) -8, -5, -3, -1
b) (-1) - (-8) = 7

Therefore, the range is 7.

Find the range:

1. Set of data: 7, 4, 3, 6, 2, 5, 8, 3
a) 2, 3, 3, 4, 5, 6, 7, 8
b) 8 - 2 = 6
Therefore, the range is 6.

2. Set of data: 11, 8, 8, 5, 7, 6, 7, 6, 6
a) 5, 6, 6, 6, 7, 7, 8, 8, 11
b) 11 - 5 = 6
Therefore, the range is 6.

3. Set of data: -4, 3, -1, 0, 2
a) -4, -1, 0, 2, 3
b) 3 - (-4) = 7
Therefore, the range is 7.

Outlier - Value that is much smaller or larger than the other data values. Also note that, a data set may contain one or more outliers, or none at all.

To find the outlier:
First, you have to reorder from least to greatest.
Second, identify the number(s) which are much greater or lower than the other values.

Find the outliers of the following:

Here is a link on range.

Here is a video of range and outliers. Enjoy!

1. Nice post Marie. It looks very organized. I like the video and the link. Next time use more than two colors. other than that, excellent job!

2. Great job Marie. Your scribe is very neat and organized. It is also easy to understand. Next time it would be nice if you used more colours.

3. Great post Marie ! Your scribe was very organized and i also like the site and the video but next time use more than two colors to really pop the important information out.

4. Great post Marie!!! It was very neat and organized. The only thing I would change is to not only use red, other than that great job!!!!

5. 來給你加油打氣!!!保重!!! .........................................

6. Good job marie the blog was very neat and organized! next time use a bit more colour!

7. Good job, Marie. Your post was very neat and organized. Next time, use more color so it would stand out nicely. Other than that, great job.

8. Great job Marie! It would be a bit better with a bit of color.

9. Great job Maire. I liked the picture. Next time you do a blog though you should use some other colors.

10. Good post Marie, I like the video and the site, but next time you should add a little more color.

11. Awesome post Marie, i like the video and the picture, but next time you should use more colour.

12. good post marie. Nice video, next time add colour

13. Nice post,Marie. I really liked the pictures and video you posted, but next time try to add a bit more than just one kind of color.

14. Great post, Marie! The pictures and the videos helped me. Next time, try to add a bit more color to the important words.

15. Nice post marie i liked the video you posted next time try to use more colours

16. Grat post i like the video but next time you should realy add more colour!

17. Good Job Marie! Very organized and easy to understand. I also liked the pictures. Maybe try using a different color next time.

18. Good job Marie. it was very easy to understand. But you should use different colours.

19. Good post Marie ! I liked how you made some words stand out. But next time, use more colours .

20. Nice post Marie! I like how you made some words really pop out and how your post is very neat. Maybe next time add more colours to catch peoples eyes more but other then that great post!