152 Data Analysis and Statistics for Geography, Environmental Science, and Engineering
this value of the statistic is 0.973. What is your conclusion? Repeat for counts 30, 25, 20, 15, 10. The
statistic should now be 12.5 and p-value = 0.013. What is your conclusion now?
Exercise 5.2
Three forest cover types (palms, pines, and hardwoods) and three terrain types (valley, slope, and
ridge). We want to see if forest cover is associated with terrain? You classify all available sites or
regions and organize in a table. What test would you use? Suppose you run this test and get value
for the statistic 10.64 and p-value = 0.0309. What is H0? What is your conclusion?
Exercise 5.3
Three zones (A, B, and C) are distinguished in a lake. Ten values of nitrat ...