There are two routes for a worker to get to his office. Both the routes involve hold ups due to traffic lights. He records the time it takes over a series of six journeys for each route. The results are shown in the table. Route 1 15 15 11 17 14 12 Route 2 11 14 17 15 16 11 a Work out the mean time taken for each route. b Calculate the variance and the standard deviation of each of the two routes. e Using your answers to a and b suggest which route you would recommend. State your reason clearly.

AppendixLO1