CMN150V FINAL EXAM PREDICTION QUESTIONS.

CMN150V FINAL EXAM PREDICTION QUESTIONS.How do social networks evolve? - correct answer The law of the few, 2-step flow model The law of the few - correct answer whenever something evolves, or spreads, somewhere along the way an "exceptional person" found out about the trend and through social connections, energy, enthusiasm, personality, spread of word 2-step flow model - correct answer information flows: media -- influencers -- public Are you able to predict whether someone will be influential in the future? - correct answer NO! Many factors involved Hybrid models - correct answer uniform + random preferential attachment (friends of friends + random) Small world network - correct answer characterized by: - number of triads (closed triangles) - small avg path length (shortest path between all nodes) - high level of clustering Factors predicting influence - correct answer number of followers and past influence Baye's rule and base rate fallacy - correct answer P(viral given influencer) does not equal P(influencer given viral) Ability of anyone to start a cascade depends on what? - correct answer global network structure When do things spread farthest in networks? - correct answer When overall network has a lot of connections Component - correct answer part of network where path can get you from one node to any other node 4 common types of networks - correct answer random scale free small world hub and spoke/star random networks - correct answer allow hypothesis testing glass of red wine analysis - correct answer verbally deduce hypothesis examining the logical interrelationships among verbal statements offered by the theory threshold functions - correct answer likelihood of getting a property depending on "p" but non-linear phase transitions emerge at certain tipping points Law of large numbers - correct answer Large enough numbers lead to a normal distribution scale-free network - correct answer some nodes may have more links than others preferential attachment preferential attachment - correct answer probability of a node to connect with new nodes corresponds to number of existing nodes "the rich get richer, the poor get poorer" "fat-tail"/power law - correct answer exponentially few nodes with many connections, exponentially many nodes with few connections Hub and spoke/star network - correct answer growing efficient networks until they are stable benefits= .8 cost=.2 indirect benefits= (.8)(.8)