Question 6.67

32. Exercise 12, Table 6.9 (page 280) presented data on cloud top brightness temperatures (measured from a satellite) and radar rain rate.

  1. If you did not do so in Exercise 12, make a scatterplot of radar rain rate against temperature. Based on your scatterplot, would you expect the correlation between these two variables to be positive or negative? Explain.
  2. Using either your calculator or spreadsheet software such as Excel, calculate the correlation between temperature and rain rate (refer to Spotlight 6.2). Using the guidelines in Figure 6.10 (page 255), classify the strength of the linear relationship as strong, moderate, or weak.