5. Factor (a) speed_vector above should be converted to an ordinal factor since its categories have a natural ordering. Create an ordered factor vector: factor_speed_vector. Set ordered to TRUE, and set levels to c("slow", "medium", "fast"). Print factor_speed_vector. (b) Use [2] to select from the second element of factor_speed_vector. Store it as da2. Use [5] to select from the fifth element of factor_speed_vector. Store it as da5. Check if da2 is greater than da5. 3 ## Data frame # Definition of vectors name