Answer:16pencil
Step-by-step explanation:
To determine which class lost the most pencils overall based on the data displayed, we should consider the median and the spread (interquartile range) of each class.
1. **Mr. Simpson's Class:**
- Median: 14.5
- Interquartile Range (spread): From 12 to 21
2. **Mrs. Cheng's Class:**
- Median: 16
- Interquartile Range (spread): From 8 to 26
Since the median represents the middle value of the dataset, and Mrs. Cheng's class has a higher median (16 pencils) compared to Mr. Simpson's class (14.5 pencils), we can conclude that Mrs. Cheng's class lost more pencils overall according to the data displayed. Therefore, the correct answer is:
**Mrs. Cheng's class; it has a larger median of 16 pencils.**