% M3eP299B.m
% missing ] in second y line.
tests = 100;
y = [91*ones(1,13),92*ones(1,15),93*ones(1,22), ...
    94*ones(1,19),95*ones(1,17),96*ones(1,14)];
x = 91:96;
[z,x] = hist(y,x);bar(x,z/tests),...
ylabel('Relative Frequency'),xlabel('Thread Strength(N)'), ...
title('Relative Frequency Histogram for 100 Tests')