2. Find the adjacency matrices for the graph b

47. Write the adjacency matrix for this graph:

Q2 Let G be the following graph with 5 vertices: 3 (4. 1) Write the adjacency matrix of G 2) Enter your adjacency matrix on Pari (or other software) and use it to calculate the number of paths of length 10 starting at the vertex 1. How many of these paths end at vertex 1? Vertex 2, 3, 4, and 5?

3. Represent the following graph using 1) adjacency list 2) an an adjacency matrix. a e

Let's assume that there are 500 people in a population. The researcher has access to all 500 participants, and sends a questionnaire that is accessed by a hyperlink. Of the 500 possible subjects, 485 complete it. Does this mean that the results generated from this study will be highly-accurate? What might cause the study to be unreliable?

B. Find the adjacency matrix of the following graphs. 1. b 2. a 9. C

3. Can you think of a connected graph with four vertices, so that the span of the columns of the adjacency matrix is R¹? Can you generalize this to a graph with n vertices?

This graph shows data from people from the sub-Saharan area of Africa who have contracted HIV. Outcomes for the patients were recorded as one of 4 mutually possibilities: alive and still in care at the original clinic, alive and still in care after transferring to a new clinic, alive but no longer visiting a clinic, or they’re dead. Keep in mind that this data were collected are from clinical records. Assume that the sample is a random representation of sub-Saharan Africans with HIV. Antiretroviral therapy is used to treat patients. What is the experimental unit? What are the variables (including the types)?

Consider the network with adjacency matrix A given by Which type of network best represent the data Select one: a. Weighted b. C. Undirected None of the other choices ^= (1 º) A

Why won't the whiteboard image show up?