## Wednesday, May 19, 2010

### Range and Outliers

Range
• The positive difference between the largest and smallest value in a data.

Here are some examples:

1st- Reorder the data by least to greatest

2 ,3 ,4 ,6 ,9

2nd - Find the largest value and smallest value

2 and 9

3rd- Subtract the lowest value to the highest value

9-2=7

Here are some more examples:

-8 , -1 , -3 , -5
reorder
-8 , -5 , -3 , -1
Find the high and low value then subtract
(-1)-(-8)=7

Outliers
• A value that is much smaller or larger than the other data values
• A data set may have one or more outliers or no outliers

Find the Range:

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

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

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

5 , 6 , 6 , 6 , 7 , 7 , 8 , 8 , 11
11-5=6

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

-4 , -1 , 0 , 2 , 3
3-(-4)=7

Find the outliers:

a) 18 ,19 ,79 ,17 ,20 ,12
12 ,17 ,18 ,19 ,20 ,79 = 79

b) 14 ,14 ,16 ,15 ,1 ,16
1 ,14 ,14 ,15 ,16 ,16 = 1

c) 98 ,202 ,99 ,91 ,2 ,95 ,89 ,88 ,94
2 ,88 ,89 ,91 ,94 ,95 ,98 ,99 ,202= 2 and 202

Homework:
www.mytextbook.ca
Pages 437 - 439

1. Great job Paul. Your scribe is very neat and organized. The way you used colour on some of the words made them really pop out. Next time, try not to leave too much space in between the information and the video.

2. Nice post Paul. It looks very organized and it looks like you put a lot of effort on it. Great job!

3. good job paul! It was a very neat post.

4. Geat job Paul!! Your post was really organized. The only thing I would change is not to use too much colour in one spot. Otherwise, AWESOME JOB!!!!

5. Good job Paul on doing your post.It is very neat and understandable.But next try to spread the color out instead of putting it all in one spot.But it was still a good job.

6. Excellent post, Paul! It is very neat. One improvement is to not use too many colours, or use them wisely. Overall, it was well done.

7. Great post, Paul. Your post looked neat and also the pictures was very helpful. Next time, don't leave too much space at the bottom and also don't use too many colors. But everything was good.

8. Exellent post Paul. It was very well done!

9. Good work Paul. I liked how neat and organized it was. But if you do another post try to spread the color out more.

10. Great post Paul, I like how you organized the whole post, but next time try to move all the colors around not just in one place.

11. Good post Paul, it was well organized and easy to understand, and also how you used a little colour, but next time you should try to use a little more.

12. good post paul, next time add colour to it

13. Nice post Paul. The post was very organized and the video was very helpful. Next time add color to all of the post and not just one section.

14. Great post i realy likeed the video.

15. Good Job Paul! Very well organized and neat. Nice pictures too.

16. Good job Paul. i liked your pictures.

17. Great post Paul ! I like how your post was organized.

18. Nice Post Paul, It was very neat and organized.

19. Nice post Paul! I like how it is very neat and very understandable.