Following mistakes are generally observed in most of the assignments. Please check them in your notebook and correct them on your own.
While plotting the time vectors, x-axis of the plot is left as the index of the vector. This should be taken care and should be labelled and scaled according to the proper units of the quantity plotted.
When certain properties of any file are asked, do not report all the properties, just report what is asked.
Matalb rescales the axis of a plot so that the maximum and minimum of the data are displayed to the largest extent on the screen. At times it is more useful to represent the zero of the axis. Make necessary changes using axis command.
Do not work in the matlab/work directory. Make a separate directory in C: or D: drive and make all your functions / files there.