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In this program, performed linear least square fit, firstly took x and y given values and then used fit predefined function of MATLAB mean Fit curve or surface to data before y fitted to x and then x fitted to y using subplot to plotted and noticed that both are different and in y fitted to x has low amplitude as compared to x fitted to y and also legends used through fit function and alos calculated slope and intercept using polyfit function of MATLAB.. In this program, performed weighted least squares problem aka beer foam using MATLAB, firstly loaded given text file and accessed values of hi,t and standard deviation and then performed weighted least squares problem aka beer foam. At the end used lscov and fit function and then plotted. In this program, performed logistic Map using MATLAB, the logistics map is a classic example of transition from stable to chaotic behavior as a single parameter changes value. This script plots the semi-stable values of x(n+1) = r*x(n)*(1-x(n)) as r is varied, took r, x,n values and performed logistic Map