So it's 43 1's plus 43 times 1 over the total number of samples I took, over 100. So what does this get me? So 57 times 0 is 0. 43 times 1 divided by 100 is 0.43. That is my sample mean, the mean of just the 100 data points that I actually got. Now, what is my sample variance? Is going to be equal to the sum of my squared distances to the mean divided by my samples minus 1.