Sangeetha Pulapaka
1

The relative frequency marginal distribution of transportation method can be found out by dividing the total of each typeof vehicle with the total number of vehicles.

\frac{1887}{1938}\ \approx97\%

Public transportation:

\frac{9}{1938}\ \approx0\%

Other:

\frac{42}{1938}\ \approx2\%