image Earthquakes. Use the One Variable Statistics and Graphs applet for Exercises 126–131. Work with the Earthquakes data set, which shows the magnitude on the Richter scale of 57 earthquakes that occurred during the week of October 15–22, 2007.

Question 2.267

earthquakes

130. Click on the Stem-and-leaf tab.

  1. How many stems are there?
  2. Without counting, how many leaves are there? How do we know this?