The director of a museum recorded the number of students and adult chaperones in several school groups visiting the museum. she organized
the data in a scatter plot, where x represents the number of students and y represents the number of adult chaperones. then she used a
graphing tool to find the equation of the line of best fit:
y = 0.123x + 5.397
based on the line of best fit, approximately how many students are predicted to be in a school group with 20 adult chaperones?

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.

answer. d.289 hope that

3 qrs + 3/2 xy hope this : /

step-by-step explanation: