Which of the following scenarios will produce data with no variability? A Two hundred runners were entered into a local 5K run. Chanda recorded the times
for each runner.
B The students in Mrs. Thompson’s science class scooped a small amount of sodium
chloride and found its mass.
C Jackson went to the local mall and surveyed every third shopper. He asked them
how many items they had purchased.
D Sixty books were divided evenly among a group of students and Teri recorded the
number of books each student received.

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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step-by-step explanation:

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