Monday, November 14, 2011

Kassey's Graph Post

1) Notes about graphing:
  •  Data can be presented using bar graphs, double bar graph, circle graph, line graphs, and pictographs.
  • Different graphs may provide different information and display certain types of data better. 
Bar graphs: 
 advantages:  -are best for comparing data across categories.
disadvantages: - graph categories can be recorded to emphasize certain effects.
                           -Use only with discrete data.

double bar graph: 
advantages: are best for comparing two sets of data across categories.
disadvantages: The intervals on the double bar graph can be inaccurate.

circle graph:
advantages: are best for comparing categories to the whole using percent.
disadvantages: it takes a lot of time and there is a special way of doing the circle graph. 

line graph:
advantages: are best for showing changes in data over time.
disadvantages: it only will show data over a long period of time.

advantages: are best for comparing data that can be easily counted and represented using symbols.
disadvantages: icons must be the same size and it is hard to see how much the picture is showing.

 The following chart shows Pizza Sub Sales over a month.  What 2 graphs would show the information accurately?

a) I would use a line graph or i could use a bar graph to show this information accurately.

b) yes, i would continue because the sales are going up a lot and that shows that the pizza subs are very popular and they should still sell them.


a) If i were to choice a graph i would choice the line graph because it shows that the sales are increasing.

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