英文翻译具有学术风格多用高级词汇不要漏翻译：通过上述数据分析我们发现Catamarans的预测价格均偏高Monohulled Sailboats的价格基本不受影响。即香港SAR市场对双体帆船和单体帆船的区域影响是不一样的。Monohulled Sailboats受当地收入水平影响更小而Catamarans在高收入地区的价格会偏高。这是因为Catamarans通常比Monohulled Sailbo

Through the above data analysis, we found that the predicted prices of Catamarans are generally higher, while the prices of Monohulled Sailboats are not significantly affected in the Hong Kong (SAR) market. This indicates that the regional impact of double-hulled and single-hulled sailboats in Hong Kong (SAR) is different. Monohulled Sailboats are less influenced by the local income level, while the prices of Catamarans tend to be higher in high-income areas. This is because Catamarans are typically more expensive than Monohulled Sailboats and may be more suitable for high-income individuals.

Catamarans have many advantages over Monohulled Sailboats. Firstly, they offer larger deck and interior space, which allows for more amenities and entertainment activities, making them more suitable for a luxurious and comfortable lifestyle. Secondly, Catamarans are more stable than same-sized Monohulled Sailboats due to their double hulls, which make the boat smoother on the water and reduce the risk of seasickness and capsizing. In addition, Catamarans usually have a shallow-draft design, allowing them to access shallower bays and rivers, making them an ideal choice for exploring unknown areas. Finally, Catamarans require less maintenance and upkeep costs as they do not have mechanical components such as propellers and transmission systems.

Overall, these advantages make Catamarans the preferred choice for high-income individuals, as they typically value comfort, privacy, safety, and convenience, which Catamarans provide. In summary, this paper differentiated regions by adding economic indicators for Hong Kong and used the Random Forest method to construct a regression model to fit the listing prices and influencing factors of sailboats in the Hong Kong (SAR) market. We found that the impact of double-hulled and single-hulled sailboats is different. For the high-income region of Hong Kong, Catamarans are usually more stable, faster, and have larger hull space, but require more spacious berths and higher costs. Monohulled Sailboats can provide a more traditional and classic sailing experience and may be more suitable for single-person driving or smaller teams. The model also reflected this well, with the predicted price of Catamarans being higher than that of Monohulled Sailboats in the high-income region of Hong Kong, which is consistent with the conclusion obtained in Question 2, demonstrating the rationality and accuracy of the model.

In the sensitivity analysis, we visualized the contribution of each variable as a bar chart to explore the impact of influencing factors on the second-hand sailboat listing price in Model 2. The height of each bar in the bar chart represents the contribution of that independent variable, indicating the degree of influence of that variable on the model's prediction. This method allows us to intuitively display the impact of different independent variables, enabling us to identify the most important and secondary variables. By analyzing the bar chart, we can gain a deeper understanding of the model's characteristics and performance, and determine which independent variables should be prioritized for building a better model.