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The question presents two box-and-whisker plots comparing the test scores of two different classes: the **second-period class** and the **fifth-period class**. Mrs. Chang predicts that the **fifth-period class** will have higher scores on the next test.

Let's analyze the box plots and the provided answer choices:

### Key Observations:
1. **Second-Period Class:**
   - Range: From approximately **50 to 100**.
   - Median: Close to **70**.
   - Interquartile range (IQR): Between **60 and 80**.

2. **Fifth-Period Class:**
   - Range: From approximately **50 to 90**.
   - Median: Close to **80**.
   - Interquartile range (IQR): Between **70 and 90**.

### Answer Choices:
- **A**: *The range of scores in the fifth-period class is less than the range of scores in the second-period class.*  
  - True, but this does not directly justify the prediction.

- **B**: *The second-period class had some scores that were greater than the highest score in the fifth-period class.*  
  - This is **incorrect** because the maximum score in the second-period class is **100**, which is higher than in the fifth-period class, but it doesn't support Mrs. Chang's prediction.

- **C**: *The lowest score in the fifth-period class was about equal to the median score in the second-period class.*  
  - This is **incorrect**. The lowest score in both classes is around **50**, and the medians are higher.

- **D**: *The median score in the second-period class was greater than the median score in the fifth-period class.*  
  - This is **incorrect**. The median in the fifth-period class is actually **higher**.

### Conclusion:
The correct answer is **A**. While the range of scores in the fifth-period class is smaller, suggesting that the class may perform more consistently and possibly better in the future, this fact alone justifies Mrs. Chang's prediction.

Would you like further clarification or more details on any part of this?

### Related Questions:
1. What is the difference between the median and the range in these plots?
2. How does the interquartile range reflect student performance consistency?
3. What role does the median play in predicting future performance?
4. Could the highest score alone predict future class performance? Why or why not?
5. How might the lower quartile in these plots affect Mrs. Chang's prediction?

#### Tip:
When analyzing box-and-whisker plots, always pay attention to the median and interquartile range (IQR) to understand the distribution and consistency of the data.

Based upon the two box-and-whisker plots of the second-period class and fifth-period class, which statement justifies Mrs. Chang’s prediction that the fifth-period class will have higher scores on the test next week?

Understand how to justify a prediction using box-and-whisker plots. This problem involves comparing two classes' test scores based on range, median, and interquartile range. Suitable for middle school students, Grades 6-8.

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