I have a program for which I am trying to analyze its performance. My adviser recommended that I find the probability distribution for the data I have. However, I am not quite sure how to do this. The data is something like: Code (Text): [U]Time[/U] [U]Size[/U] 2.10 ms 2 2.30 ms 2 2.90 ms 3 3.10 ms 2 3.30 ms 4 4.10 ms 4 4.30 ms 4 5.30 ms 5 5.50 ms 6 ..etc He suggested I find the probability distribution between the times and the size. I am not really sure what he means by this. What I've tried: I found the average and the standard deviation of the times. I then, in Excel, used the function: Code (Text): NORMDIST(Time[x], avg, std dev, true) Where x is a Time on the above list. I do this for every single time. I then plot the distributions (on the Y) vs. the Times (on the X). With this, I get a plot that resembles the one I've attached to this post. The question is: is the plot of distributions for each value vs. Time a meaningful plot? Also, I do not have Size factored in. What plot would allow me to compare Time vs. Size? Thank you.