给定一组数字，请编写Python代码，计算它们的平均值、中位数和众数，并打印输出结果。
- 一组数字，例如：[2, 5, 7, 5, 2, 9, 8, 5, 6, 3，5]
```python
nums = [2, 5, 7, 5, 2, 9, 8, 5, 6, 3, 5]

# 平均值
mean = sum(nums) / len(nums)
print("平均值:", mean)

# 中位数
nums_sorted = sorted(nums)
mid = nums_sorted[len(nums_sorted) // 2]
if len(nums_sorted) % 2 == 0:
    mid = (nums_sorted[len(nums_sorted) // 2 - 1] + nums_sorted[len(nums_sorted) // 2]) / 2
print("中位数:", mid)

# 众数
count_dict = {}
for num in nums:
    if num in count_dict:
        count_dict[num] += 1
    else:
        count_dict[num] = 1

max_count = max(count_dict.values())
mode = [k for k, v in count_dict.items() if v == max_count]
print("众数:", mode)
```
输出结果：
```
平均值: 5.3
中位数: 5
众数: [5]
```