Monday, September 28, 2009

Razel's scribepost for September

Question 8:

The table shows the decibel levels of different sounds in the environment.












a) Use a bar graph to display the data. What is one advantage of using a bar graph?

A bar graph shows an comparison of sound levels.











b) Could you use a line graph to display that data?

No, Because the data are not a comparison over a period of time, a line graph would not be a good choice of graph.


c) Could you use a circle graph to display the data? Explain.

A pictograph could be used, but it would not be as good as a bar graph because of the fractions of pictures need to represent these data.

15 comments:

abby 8-73 September 28, 2009 at 8:00 PM  

Good Job Razel! (:
except the picture looks distorted which made it look blurry. But still good! (:

Eric 8-73 September 28, 2009 at 8:08 PM  

Good job on your scribe post.
The picture looks kinda blurry.
I liked how you gave us the diagram for the picture.

Eric 8-73 September 28, 2009 at 8:08 PM  
This comment has been removed by the author.
montgorp September 28, 2009 at 8:52 PM  

Hi Razel

Mr Montgomery here. I teach maths to kids your age in Perth Western Australia.

Thanks for taking the time to write in your blog. I'm sure Mr Harbeck appreciates it.

Its a great post. But give a bit more thought to circle graphs. Are you sure circle graphs and pictographs are the same thing?

I'm not clear on why you wouldn;t use a circle graph to represent this data.

Jo September 28, 2009 at 8:58 PM  

Well done Razel - its good that you know a line graph can't be used for categories (discrete) but only for continuous data. I am reading your post from Westen Australia

Jo Hart

Anonymous,  September 28, 2009 at 9:08 PM  

HI THIS IS AMY FROM PERTH, WESTERN AUSTRALIA.

I THINK YOU EXPLAINED IT VERY WELL AND AGREE WITH YOU

Caitlin873 September 28, 2009 at 10:19 PM  

GOOD JOB RAZEL!!!
I think its good but like ,what abby and eric said it was kinda blurry soo maybe you should draw it then leave it blurry, and good jod you got more comments then other peoples scribe posts.

vicky873 September 30, 2009 at 5:17 PM  

Good job Razel! YOu did a really good job. Its just that the pictures are a bit blurry, but thats it.

Kisha8-73 October 1, 2009 at 2:47 AM  

good job razel. but the pictures are kind of blurry

Camille873 October 1, 2009 at 6:32 PM  

great job razel! you did a nice jobb.. but the pictures are blurry

Alexander8-73 October 5, 2009 at 8:46 PM  

Nice job Razel very good answers.

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