O {(3,4),(-9,5),(-3,8), (-2,8)} O {(5,5), (5,-9), (-1, -8), (-4, – 7)}
O{(-5, -8), (0, –4), (-8, –8), (6,6)}
O{(-1,7), A7,8), (0, -3), (-4,-3)}

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.

shorter then the tree