Question $3.$ Fit polynomial functions on data using MATLAB

Step $1-$ upload Fish.xlsx file to Octave Online$/$ MATLAB

Step $2-$ Read the content of the file using xlsread

Step $3-$ Scatterplot of Weight $($on the y$-$axis$)$ vs Length$1($on the x$-$axis$)$

Step $4-$ Use polyfit to find the coefficients of a polynomial of degree $3$

Step $5-$ Use polyval and plot to draw the plot

The image i uploaded is from the file, however there is still more data. Use the Data that i provided you with to make the code but also keep in mind there are $162$ rows on the actual excel sheet. Thank you