Monday, October 5, 2009

Scatter plot correlations.



For the most part, it seems that the bigger the shoe size, the taller the person is. This is infact a correlation. The correlation is strong and positive, because there are only a few exceptions. Although the correlation is strong and positive, it does not mean that one causes the other.


If there is a correlation in this graph, it would be a very weak one. Nothing is consistent. We have tall stusents with long hair and tall students with short hair. There are also short students with long and short hair as well. The data points in this graph, however, do not seem extreme or unsual at all because hair length, unlike shoe sizes is something that we can easily control.

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