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## Thursday, November 10, 2011

### Patricia's Graphing Post

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

Bar Graph
• simple to understand
• compares data across categories

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

Pictograph

• can count pictures easily

• Can't see the exact amount of data

Double Bar Graph

• Compares two sets of data across categories

• If intervals are not right it makes the graph not accurate.

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.

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