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this is arguably not the best use of a line graph. It shows that as the day goes on cereal tastes  better. Because who doesn't want to eat cereal while writing a paper at 11 pm?

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This is a scatter plot that shows median household income and happiness/wellbeing. It's interesting to see that you don't have to have the highest income to be happiest. There are probably a lot of lurking variables in this though as well.

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This talks briefly about how it expects oil prices to go up by the barrel in the next few years. It doesn't state what kind of model it used to come to this decision but it would have to be some type of growth model and the most logical one I can think of is exponential.

http://money.cnn.com/2016/01/19/news/economy/imf-global-growth-china/index.html

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This article shows the power of the placebo effect in the case of Parkinsons. It showed a 20 - 30 % increase in motor functionality in patients in the placebo group. After being told they were in the placebo group though the effect was lost and they began to loose functionality again.

http://www.apdaparkinson.org/the-placebo-effect-in-clinical-trials-in-parkinsons-disease/

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This article talks about an experiment done to see the effects of caffeine on attention. It shows positive results that caffeine does improve attention and reduse fatigue but not by a marginal amount. They used a double blind model to see how the placebo effect would effect the study.

http://coffeeandhealth.org/2015/12/j-lanini-et-al-2015-acute-personalized-habitual-caffeine-doses-improve-attention-and-have-selective-effects-when-considering-the-fractionation-of-executive-functions-human-psychopharmacology-publi/

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this uses categorical data because of the different types of coffee and tea

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I was looking into IQ scores and it mentioned that there's a standard deviation of 15 between the scores.

https://www.123test.com/interpretation-of-an-iq-score/

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an article from college board highlighting the fact that higher education and higher wages have a positive correlation. Encouraging people to attend college.

http://r.search.yahoo.com/_ylt=A0LEVzj4r51WAJQAWaxXNyoA;_ylu=X3oDMTEycGJrazlvBGNvbG8DYmYxBHBvcwMxBHZ0aWQDQjEyMDZfMQRzZWMDc3I-/RV=2/RE=1453203577/RO=10/RU=http%3a%2f%2fwww.collegeboard.com%2fprod_downloads%2fabout%2fnews_info%2ftrends%2fed_pays_2007.pdf/RK=0/RS=QuZ.7vdI90GyDhEnIGCYBPx6fdE-

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The average American consumes about 200 mg of caffeine a day.

There's not really much to say it just brings up the fact that the average person consumes 200 mg of caffeine a day. Which is arguably more than they should be drinking.

http://www.huffingtonpost.com/2013/08/25/caffeine-facts_n_3814825.html

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This is a bar graph which shows the increase in global warming.

http://www.climatecentral.org/news/this-is-what-global-warming-looks-like-16341