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 2.264

earthquakes

127. Click on the leftmost rectangle in the histogram.

  1. What is the frequency for this class?
  2. What are the lower and upper class limits?

2.2.127

(a) 2 (b) 4.00, 4.30