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Statistical Parametric Mapping. SPM (Statistical Parametric Mapping) refers to the construction and assessment of spatially extended statistical processes used to test hypotheses about functional imaging data. These ideas have been instantiated in software that is called SPM.
For example, for t = 0, we are at the point (0, 0), for t = 1, we are at the point (1, 1), for t = 2, we are at the point (2, 8), and so on. We can even put arrows on a graph to show the direction, or orientation of the set of parametric equations. Here is a t-chart and graph for this parametric equation. Note that the domain is the lowest x value to the highest x value, regardless what the value for t is. The range is the lowest y value to the highest y value, again regardless what the value for t is.