Answer: Cannot be determined - incomplete data

## Explanation **Note: This question appears to be incomplete in the provided text.** The table for Q-87 only shows the headers but not the actual return data for stocks X and Y. Therefore, I cannot calculate the Spearman rank correlation coefficient. **About Spearman Rank Correlation:** - Spearman's ρ measures the monotonic relationship between two variables - It's calculated by ranking the data and then computing the Pearson correlation on the ranks - Formula: ρ = 1 - [6∑d²] / [n(n²-1)], where d is the difference in ranks - Values range from -1 (perfect negative correlation) to +1 (perfect positive correlation) **To answer this question properly, we would need:** - The complete return data for stocks X and Y for all five years - Then we would rank both sets of returns - Calculate the differences in ranks (d) - Compute ρ using the formula above Since the data is missing, this question cannot be answered with the information provided.

Author: LeetQuiz Editorial Team