Step 1 of 5: Find the number of the class containing the largest number of exam scores (1, 2, 3, 4, 5, or 6).

Answer

To find the class containing the largest number of exam scores, we need to identify the bar in the histogram with the highest frequency. By looking at the histogram, we can see six distinct bars or classes representing different score ranges. The frequency (number of scores) for each class is indicated at the top of or inside each bar: 1. Class 1 (70.5 - 75.5): frequency = 8; 2. Class 2 (75.5 - 80.5): frequency = 12; 3. Class 3 (80.5 - 85.5): frequency = 1; 4. Class 4 (85.5 - 90.5): frequency = 11; 5. Class 5 (90.5 - 95.5): frequency = 15; 6. Class 6 (95.5 - 100.5): frequency = 7. Comparing these values, the highest frequency is 15. This value belongs to the fifth bar from the left. Therefore, the number of the class containing the largest number of exam scores is 5.