Q4. Select the function that is not an example of Poisson distribution. A. The number of calls coming per minute into a call center. B. The number of soda cans sold per day in a convenience shop. C. The number of cake slices eaten by a family in 3 hours. D. The number of customers coming to a restaurant in 1 hour. Q5. Which statement is correct? A. When plotted in a log-log scale, the degree distribution of a social network should in a horizontal line. B. The power laws are scale-free. C. The degrees of nodes in a social network distribute evenly. D. The degree distribution in a random graph follows a power law. Betweenness 2 Q6. For a the graph above, what's the node betweenness of node 4? A. 1.5 B. 3