Which measure of central tendency - mean, median, or mode - best suits the reported results? 1. SURVEY: Which letter of the alphabet is most frequently used? RESULT: The most frequently used letter is "t." mode 2. OBSERVATION: What is the average speed on Canadian highways? RESULT: The average speed on Canadian highways is 110 km/hr. mean 3. OBSERVATION: What are the heights of the students in this math class? RESULT: Half the class is taller than 5 feet, 5 inches. median 4. SURVEY: Does the student population at EdCC prefer drinking Coke or Pepsi? RESULT: The student population prefers Coke over Pepsi. mean 5. TEST SCORES: Karen's grades on her math tests are 99, 98, 99, 72, 65, and 70 (all out of 100 points). RESULT: Karen would like to convince her parents that she is doing exceptionally well in her math class. mode