Sunday, November 13, 2011

Priya's Graphing Post

Bar Graph
Best for comparing data across categories.
Won't work with all numbers.

2) Pictograph

Advantage: Best for comparing data that can be easily counted and represented using symbols.
Disadvantage: Harder to use some numbers
like 7, 15, 12 etc.

3) Circle Graph

Advantage: Best for comparing categories to the whole using percents.
Disadvantage: Circle Graph can t
ake longer and is harder.

4) Double Bar Graph
Advantage: Best for comparing two sets of data across categories.
Disadvantage: The interval you use might not even work.

5) Line Graph
Best for showing changes in data over time.
Disadvantage: You can only use
the data that changes over time.

3 ways a graph can be misleading:

1) Make the bar's look wider.

2) Distort the scale.

3) Distort the visuals.

2a) The following chart shows Pizza Sub Sales over a month. What 2 graphs would show the information accurately? I think the two graphs that would show the information more accurately is a bar graph and line graph.

If you were selling Pizza Subs would you continue? How does your graph explain your answer. Yes I would continue, because both graphs show that the graph is getting higher.

4) If I had to convince Mrs. Mota that we should continue selling healthy choices, I would choose the line graph.


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