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Thursday, November 10, 2011

Patricia's Graphing Post

1. Use your notes to list the different types of graphs. Please list the advantages and disadvantages of each graph.

Line Graph
Advantage
  • is that is shows trends over time and with a bar chart it shows amount
Disadvantage
  • it use only with continuous data

line_example1.jpg

Bar Graph
Advantage
  • simple to understand
  • compares data across categories

Disadvantage
  • it is hard to see the exact number
  • only compares one set of data

f-bargraph2.gif


Pictograph

Advantage

  • can count pictures easily
Disadvantage

  • Can't see the exact amount of data



clip_image001_054.gif
Double Bar Graph

Advantage

  • Compares two sets of data across categories
Disadvantage

  • If intervals are not right it makes the graph not accurate.mh132-1.gif


    2. 3 ways a graph can be misleading is a break in the y-axis, make 1 bar wider than the others, and color 1 bar different than all the others.




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


    A line graph and bar graph.



    2b) If you were selling Pizza Subs would you continue? How does your graph explain your answer.


    Screen+shot+2011-11-08+at+11.16.18+AM.png


    If i was selling pizza subs I would continue because the line graph shows how much more I am selling.



    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?



    4a) Change each graph so that your information looks even MORE impressive. You may not change the data just the graphs

    graph.png jfbg.jpg





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