Fastest route delivery? Facility location or no facility? What kind of worker do you need to be efficient? These are questions we have been thinking about in Discrete, and it looks lie EBay, Amazon and many others have been too! Check out the New York Times article below. And if you find yourself they "type" and in need of a job this or next summer, same day delivery could be open to you :) Same Day Delivery

Graphs are supposed to help us understand relationships, identify patterns, present a lot of information but so that it's easy to access and understand. What do you think of this graph? Is it easy to access and understand the information and relationships? What does it tell you? The Flavor Connection

Traveling Salesperson Problem- How politicians might use it? World still looking for a way to get the shortest route or prove that this is impossible! Traveling Politician

Voting Methods- Jan. 2012
Discrete- As we studied/will study, there are many different ways for counting votes and different methods, with the same voter preferences, can produce different winners. This year's Oscar nomination voting is using a new voting method. Read a bit about it below. What do you think? Will it be a better way of figuring out what the best pictures are? What do you think of the purposed "Next Two" voting method? Numbers Guy Blog Post Numbers Guy Print Column

Polling Challenges- Cell phones- Dec. 2012
Discrete- Do all polling organizations call cell phone numbers? (It costs a lot to do so.) If not, how can Polls get an accurate sense of public opinion when so many Americans only use their cell phones and even if so, what can the polls do about people being increasingly less likely to participate in telephone polling? Should we trust poll data? Read below about the challenges facing Pollsters. Can you think of new ways to poll people that might lead to higher response rates and thus more accurate polls in the future? Pollsters Go Mobile Blog Post Cell phones and Polling Print Column

Example for Analysis students of a linear regression: The article you find using the link below shows an example of an instance where a linear regression was used to explain the way fetal heart rate should increase with time in the early weeks of pregnancy. Notice that this pattern does not continue after the ninth week. Thus, this linear model from the regression gives doctors an equation to use to be sure a fetus is progressing normally in the first nine weeks only. Fetal heart rate regression

For years most polling has been done over the telephone. Now online polling is becoming more prevalent. The samples will certainly not be random, but can these polls provide good information? Who is using them and why? The Numbers Guy, Carl Bialik, discusses this. And check out his graph at the end of the article, do you understand the axes and what the graph is saying? http://online.wsj.com/article/SB10001424052748703748904575411961492033660.html

We have mid-term elections coming up this fall. And with politics comes polls. Polling can give good information about large population by only asking a small, random sample. But polling can give misleading information about a population if the sample is not random. So how can one tell which polling groups are truly getting good samples? Are any? Can polling today give good information? Here's a look at an example of how statistics helps judge polls. Read the comment too. http://blogs.wsj.com/numbersguy/when-polling-numbers-dont-look-random-957/

Big or Small Government Spending? Do you trust the numbers? Does the base that the numbers are compared to change the interpretation. Do you agree with Krugman's analysis? Check out the graphs and you be the judge.

Flowing Data

Information is Beautiful

Fastest route delivery? Facility location or no facility? What kind of worker do you need to be efficient? These are questions we have been thinking about in Discrete, and it looks lie EBay, Amazon and many others have been too! Check out the New York Times article below. And if you find yourself they "type" and in need of a job this or next summer, same day delivery could be open to you :)

Same Day Delivery

http://www.wired.com/business/2013/06/ups-astronomical-math/

Graphs are supposed to help us understand relationships, identify patterns, present a lot of information but so that it's easy to access and understand. What do you think of this graph? Is it easy to access and understand the information and relationships? What does it tell you?

The Flavor Connection

Traveling Salesperson Problem-How politicians might use it? World still looking for a way to get the shortest route or prove that this is impossible!Traveling Politician

Voting Methods- Jan. 2012Discrete- As we studied/will study, there are many different ways for counting votes and different methods, with the same voter preferences, can produce different winners. This year's Oscar nomination voting is using a new voting method. Read a bit about it below. What do you think? Will it be a better way of figuring out what the best pictures are? What do you think of the purposed "Next Two" voting method?

Numbers Guy Blog Post

Numbers Guy Print Column

Polling Challenges- Cell phones- Dec. 2012Discrete- Do all polling organizations call cell phone numbers? (It costs a lot to do so.) If not, how can Polls get an accurate sense of public opinion when so many Americans only use their cell phones and even if so, what can the polls do about people being increasingly less likely to participate in telephone polling? Should we trust poll data? Read below about the challenges facing Pollsters. Can you think of new ways to poll people that might lead to higher response rates and thus more accurate polls in the future?

Pollsters Go Mobile Blog Post

Cell phones and Polling Print Column

Example for Analysis students of a linear regression: The article you find using the link below shows an example of an instance where a linear regression was used to explain the way fetal heart rate should increase with time in the early weeks of pregnancy. Notice that this pattern does not continue after the ninth week. Thus, this linear model from the regression gives doctors an equation to use to be sure a fetus is progressing normally in the first nine weeks only.

Fetal heart rate regression

For Basic Stats class

Primary Polls nytimes

"When wording skews results in Polls"http://online.wsj.com/article/SB10001424052748703384204575510272945083114.html

For years most polling has been done over the telephone. Now online polling is becoming more prevalent. The samples will certainly not be random, but can these polls provide good information? Who is using them and why? The Numbers Guy, Carl Bialik, discusses this. And check out his graph at the end of the article, do you understand the axes and what the graph is saying?

http://online.wsj.com/article/SB10001424052748703748904575411961492033660.html

We have mid-term elections coming up this fall. And with politics comes polls. Polling can give good information about large population by only asking a small, random sample. But polling can give misleading information about a population if the sample is not random. So how can one tell which polling groups are truly getting good samples? Are any? Can polling today give good information? Here's a look at an example of how statistics helps judge polls. Read the comment too.

http://blogs.wsj.com/numbersguy/when-polling-numbers-dont-look-random-957/

Some graphs that present shopping data across the US from retailers- July 2010

Questions for you: Summary and significance? Powerful graph? If so, why? If not, why not? Questions that are not answered in the graph or article? What more would you want to know? Who might this information be useful to? Why?

http://online.wsj.com/article/SB10001424052748703977004575393423932303014.html?mod=WSJ_LifeStyle_Lifestyle_6#articleTabs%3Dinteractive

Big or Small Government Spending? Do you trust the numbers? Does the base that the numbers are compared to change the interpretation. Do you agree with Krugman's analysis? Check out the graphs and you be the judge.