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The easiest way to get an idea of the type of data
you're looking at is to graph it; graphing the first column of data (accurately!)
would give you a straight line. Checking it by making sure the delta y's
are constant 2.3 confirms it. Graphing the last column of data shows a function
oscillating (going up and down a lot). This could be a polynomial, or more
likely a trig function like sine or cosine. If you gave the polynomial answer,
you would need to also include that you expected the oscillating to stop.
If you gave the trig function answer, you needed to include that you expected
the oscillating to continue. This just leaves the middle column of data. Graphing this, you get a function that's concave up and increasing, so either must be a log function or a power function (with a power between 0 and 1.) Your answer would depend on whether your graph of the data crossed the x-axis and kept on going down (like a log function) or stopped exactly at the origin (like a power function.) |