2 parts to this question part A: Your younger brother has just transferred to a
ID: 3146095 • Letter: 2
Question
2 parts to this question part A:
Your younger brother has just transferred to a new secondary school. There are a bunch of popular students in his class, the “kewl kidz”: everyone in class is friends with at least one kewl kid, and the kewl kids are all friends with each other. Having peeked at your notes for GER1000, he thinks it’s a good idea to befriend the leader of the kewl kidz, Amos. He only manages to befriend Amos in the first week of school. Consider the network whose vertices are made up of students in his class, and an edge represents friendship between students. What is your brother’s betweenness centrality in this network just after one week in the new school?
(A) 0
(B) 1
(C) Between 0 and 1
(D) Cannot be deduced from the given information
Part B: Putting your knowledge gained in GER1000 to good use, you subsequently calculate the “Amos number” of every student in your brother’s class. This is the distance of the student from Amos in the network described in the previous question. Without doing further calculations, we can conclude that: Ccen(brother) ___ Ccen(Amos)
(A) <
(B) =
(C) >
(D) None of the above can be deduced from the given information.
Explain your answers!
Explanation / Answer
Part A:- As we do not have the total no of student of the class and the no of kewl kids in the class so we can not determine the betweenness centrality exactly but as maximum minimum theory he had friendship with one kewl kid so the kewl kid is friend of all kewl kids and with one guy from the class so maximum betweenness is between 0 to 1.
Part B:-If we read the previous explanation then you can count that he is friend with one kewl kid only but Amos is friend with all kewl kid and a guy from class that means Amos no is greater than the brothers no
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