Wednesday, July 13, 2011

Index Value Plot




Index value plots shows the relationship of each residual against the corresponding index in the data set. This would be the comparison of values of the x and y axis. The above image is an example of the stock market growth rates within a period of time. The row number or index, the x-axis,  corresponds to the order in which the data was collected and in this case it was annually. The chart above visualizes the growth rates of the S&P index from 1872 to 2007. You can see the times when the stock markets growth has increased and decreased during a specific time period.

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