Molecular Weight Analysis

Given the data in the table below, produce a histogram $($e$.$g$.,$ Excel or MATLAB$)$ showing the distribution of chains relative to the molecular weight of polymer chains in a sample. The MW of the repeat unit is $77\frac{g}{m}ol.$ Calculate $x_N,M_N,M_w$ and PDI for the sample. Illustrate the distribution of the sample with a histogram and comment on its shape. What is the standard deviation of the distribution?

$\backslash$table$[[$# chains,,$MW(\frac{g}{m}ol),$# chains,$MW(\frac{g}{m}ol)$