While you can complete this assignment by hand, it would be much better to do this using either a spreadsheet or simple Python script with the help of a matrix computation library like Numpy. The latter technique will be covered in class. $(1)$ Calculate the Consistency Index $($CI$)$ and Consistency Ratios $($CR$)$ of each comparison matrix. Comment on the meanings of these numbers. $(2)$ Calculate the final rankings of the $4$ cars using both the Geometric Mean method and the Eigen method. Are the two rankings the same?$(3)$ A typographical mistake in data entry results in the following criteria level comparison matrix $($the red fonts highlight the mistake$).$ How does the ranking change? Is it possible to spot this mistake BEFORE computing the ranking?