discussion_unit_3_math.docx
Discussion unit 3 math
Business Statistics
1. Explain which of the three measures of central tendency (mean, median, mode) are appropriate to use for each of the two cases below. Do not work out the problem. Only express your answer and explain why you chose the answer.
a. Prices of laptops: $600, $1300, $2000, $3500
b. Candies:
Hershey's Bar®: 50 cents
M and M's®, Payday®, Twix®: 50 cents
Reese's Pieces®: 50 cents
Nestle Crunch Bar®: 60 cents
2. Search the internet to find two graphs to critique: one you evaluate to be a good graphical representation of the information presented and the other to be a poor graphical representation of the information presented.
Answer the following questions about your selected graphs.
1. What types of graphs are used to display the information?
2. Briefly describe the purposes of the graphs.
3. Do the titles and notes explain the data satisfactorily? Explain why or why not.
4. What additional information would have been helpful?
5. What suggestions would you make for a better presentation of this data?
6. What questions would you ask the researcher about how the data were collected?
For the following I need to tell Dasia that I like her post and talk a little about
|
|
Dasia Cox
|
4/10/2014 4:20:38 PM
|
|
|
|
For the laptops, it really depends on the question being asked, but since there's nothing specific, I'd have to narrow it down to mean and median. I would assume someone would be shopping for laptops and would want to know about the average prices of them, or which price met in the middle based on quality and mean and medin would be best to decide that.
As far as the candies go, based on the data provided, I would say that mode would be the best. Five out of six of the candies are priced at 50 cents and only one is left over and priced at 60 cents. There for mode would show much price appears most often.
http://blogs-images.forbes.com/naomirobbins/files/2012/05/3dbar_labels.png
![http://blogs-images.forbes.com/naomirobbins/files/2012/05/3dbar_labels.png]()
This is a perfect example of a bad bar graph in my opinion. It's a three dimension bar graph that is supposed to be used to display a lot of info but it's a little poorly put together. The labeling is unclear and you cant even see some of the green bars on here to tell what the data is. It would have been better is they had just broken up the graph or made it bigger to space out the data more to make it a little more clear to see.
![http://www.mathgoodies.com/lessons/graphs/images/compare_example1_bar.gif]()
This bar graph is much better. Its not 3-D, but rather more simple and straight to the point. You can clearly read the info that is provided to further do you work and the numbers aren't bunched together. The titles and notes are very clear and tell you exactly whats going on, which makes things easier for everyone.
http://www.mathgoodies.com/lessons/graphs/compare_graphs.html
|
|
Bettyboop04
