## Saturday, November 12, 2011

### Angelika's Graph Post

Bargraph
Advantage: Is best for comparing data across categories
Disadvantage: It's hard to determine the actual number

Double Bar Graph
Advantage: Is best comparing two sets of data across categories
Disadvantage: It's difficult to know the exact number

Line Graph
Advantage: Best for showing changes in data over time
Disadvantage: The exact amounts aren't clear depending on the scale

Pictograph
Advantage: It's best for data that can be easily counted
Disadvantage: You can only use pictograph if the data is even

Circle Graph
Advantage: Best for comparing categories to whole using percent
Disadvantage: You have to multiply to determine the number

How a graph can be misleading?
1: Break in the y axis
2: Making one bar larger
3: Changing the colour of a bar
4: Making one 3D

3.a What two graphs would you use?
Line Gtaph & Bar Graph
It would show the Pizza Subs sale over time

3b
If you were selling Pizza Subs would you continue?
I would continue it shows the sales getting higher and higher over time

4).
Below you see 2 different examples of graphs showing healthy choices sold at the canteen. If you had to convince Mrs. Mota that we should continue selling healthy choices which graph would you choose?
I would choose the line graph because it shows Mrs.Mota that it goes higher and higher over time. If you choose the pictograph you have too count and count until you find the exact amount.

4a).
Change the graph, to make it look more impresive. you may not change the data.