23. For the given adjacency matrix: го 1 10 010 0 1 101 1 00 1 0 1 00 1 1 0 a. Draw the corresponding graph 10007

6. What is wrong with the following line graph? Frequency 30 25- 20 15- 10- 5- 0 5 10 20 25 27 30

Summarize the epidemiological findings in the three graphs infigure .

Every day a school bus driver passes the same traffic light twice, once before school and once after. Each time he passes the light, he records if it is red, green, or yellow. Here is a summary of the data he got after 200 days. Traffic light before school red red red green green green yellow yellow yellow Traffic light after school red green yellow red green yellow red green yellow Number of days 25 38 12 34 36 11 16 13 15 Suppose the driver will continue recording the colors for 150 more days. In how many of these 150 days will the light be yellow exactly once? Use the data to make a prediction.