Using the set {1,3,6,7,8,9}, how many odd numbers can we construct between 100-999, if no element may be used more than once in a number? (a)
(b) Same question as 3(a), but what if digits can be repeated?

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.

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answer: graph 2

step-by-step explanation: