Showing posts with label misrepresenting data. Show all posts
Showing posts with label misrepresenting data. Show all posts

Thursday, November 10, 2011

Randolph's Graphing Post!

1. a.) Bar Graph
Advantage: It can easily compare two and three bar data sets.
Disadvantage: It can recorded to emphasize of certain effects of the data.





b.) Lin
e Graph
Advantage: It can be inferred from the graph line.
Disadvantage: You only use the continuous data.




c.) Circle Graph
Advantage: Are best for comparing categories to the whole using percents.
Disadvantage: It can only compare of using one variable.




d.) Double Bar Graph
Advantage: It can be used to compared of two data steps.

Disadvantage: It can only be compared of two data steps.



e.) Pictograph
Advantage: It handles large data of using keyed icons.
Disadvantage: It is the best for only 2 or 6 categories of data.




2.) How the graphs are misleading? 3 ways are:

1. Break the y-axis.




2. Distorting the visuals.




3. Distorting the size of a bar.




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

Answer: I think I would choose for 2 graphs are bar graph and the line graph so the information would be more accurately.


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

Answer: Yes because I would like to continue to sell more pizzas so the items of pizzas would selling more and more every week.




4. a.)
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?



Explain: I think I choose the line graph because it was selling more in the canteen every month.

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




Wednesday, November 9, 2011

Alyshia's Graphing Post

1. Different graphs may provide different information and display certain types of data better, like:


Bar graphs: are best for comparing data across categories


Double bar graphs: are best for comparing two sets of data across categories


Circle graphs: are best for comparing categories to the whole using percents. The sum of all the percents in a circle graph is 100%


Line graphs: are best for showing changes in data over time


Pictographs: are best for comparing data that can be easily counted and represented using symbols


2.


The 3 ways that a graph can be misleading is:



  1. distorting the scale

  2. distorting the size of bars

  3. distorting the visuals

























2a) The following chart shows Pizza Sub Sales over a month. What 2 graphs would show the information accurately? The line graph and the bar graph will show the information more accurately.
2b) If you were selling Pizza Subs would you continue? How does your graph explain your answer. I would continue selling pizza subs because over the weeks the sales have been getting better and better.


3. 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 a line graph because it easily shows how the sales of the healthy choices at the canteen are getting better.
4a) Change each graph so that your information looks even MORE impressive. You may not change the data just the graphs.


My graphs that I think make the information more accurate.




This is a link that might help you if you are having problems: