1) Roller Coaster Speed: The mean speed for the five fastest wooden roller coasters is 69.16 miles per hour, and the variance is 2.76. The mean for the five tallest roller coasters is 177.80 feet, and the variance is 157.70. Compare the variations of the two data sets.

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2) Hospital Emergency Waiting Times: The mean of the waiting times in an emergency room is 80.2 minutes with a standard deviation of 10.5 minutes for people who are admitted for additional treatment. The mean waiting time for patients who are discharged after receiving treatment is 120.6 minutes with a standard deviation of 18.3 minutes. Which times are more variable?