Wednesday, February 15, 2012

Topic-Positive Correlation

One topic I want to discuss is “positive correlation”.  A positive correlation is if an incidence of one event increases when the second one increases. There are a lot of positive correlations that occur in the world and in our lives. For example, there is a positive correlation between the more cups of coffee you drink and the number of hours stayed awake. Another example would be the positive correlation between the more factories being built and the amount of carbon dioxide in the air. Another example of a positive correlation is the more companies opening up and the amount of job openings. A positive correlation doesn’t mean the situation has to be positive. For example, the more cigarettes smoked and the risk of lung cancer. So the more cigarettes smoked then the higher the risk of lung cancer. So, as long as the correlations between any two are increasing, then it is considered a positive correlation. 

4 comments:

  1. Hi, 

    I thought you gave some good examples of positive and negative correlations. There are many things is our lives that positive correlation is directly related to. The ones such as how many cups of coffee we drink determines how many hours we will stay awake is probably something that we are more aware of. But things like the more factories that are built the more carbon dioxide gets emitted into the air and pollutes it. Instead of thinking of this negative correlation we may be thinking that the economy must be doing better if more factories are being built and used. I think that as people we try to avoid thinking of the negative even if we know deep down that there are negative consequences.

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  2. I liked how you used those examples to fully explain the topic on positive correlation. In addition, your example was also very relatable. In my case, and assuming many college students as well, drink many cups of coffee when we need to stay up late most especially during finals or midterms week. Going off of your discussion on this topic, another example might be that the sales of ice cream cones go up as the weather becomes warmer or also goes up. There are many situations like these that we encounter on a regular basis. It is good to recognize them and be aware of what they are called.

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  3. They way you explained positive correlation was very informative and it was really understandable. Like the other comments say I thought it was a good idea on how you used coffee and staying up late because I know many students that stay up all night drinking energy drinks or coffee. I know a correlation I recognize each day is when I eat breakfast. The more food I eat for breakfast in the morning, the more energy I have for the rest of the day. Other examples I use may be the more I study for a quiz or the more I do homework, I end up getting a better grade on the test.

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  4. I agree with the other posts that you use good examples of positive correlation to illustrate it. I can definitely relate to the coffee example. One thing I would add is the problem of establishing causation from correlation. There have been some very famous instances of events having correlation, and thus one was thought to be causing the other, when in fact that correlation was merely coincidence. One I can remember from economics class was an investor who plotted a positive correlation between solar flares and stock prices. This trend was tracked with uncanny accuracy for many years and he was convinced the solar flares were causing stock prices to rise. Needless to say he lost a lot of money when he found out the solar flare did not, in fact, affect stock prices.

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