[Math] Plotting graph for simple harmonic motion experiment

Question

I am asked to plot a curve for a graph given the follow kg table and information:

Here is my attempt. Does the curve look correct ? And if not could you explain where I went wrong.

Answer 1

Your curve looks correct. For future problems like this, I recommend using an online graphing calculator, like Desmos. I plotted these points for you and found a fitted cosine curve here.