Create a data file that stores data points (the x values in one column and then the y values in a second column). Write a script that will execute the following:
∎ Read the data points.
∎ Fit a straight line to the points.
∎ Create a vector diffv that stores for every x value the difference between the actual y value and the y value predicted by the straight line.
∎ Find and print the standard deviation of the vector diffv.
∎ Plot the original data points and the line.
∎ Print how many of the actual y values were greater than the predicted.
∎ Print how many of the actual data y values were within 1 (+ or ) of the predicted y value.