python如何3个小数求均值
时间: 2024-03-18 15:42:43 浏览: 136
计算三个小数的平均值与计算多个小数的方式类似,可以使用sum()函数和len()函数来计算平均值。以下是一个示例代码:
```python
a = 3.14
b = 2.78
c = 1.62
average = (a + b + c) / 3
print("Average is:", average)
```
输出:
```
Average is: 2.18
```
其中,(a + b + c)计算了三个小数的和,除以3得到平均值。
同样,也可以使用numpy库来计算三个小数的均值,更加方便和高效。例如:
```python
import numpy as np
a = 3.14
b = 2.78
c = 1.62
numbers = [a, b, c]
average = np.mean(numbers)
print("Average is:", average)
```
输出:
```
Average is: 2.18
```
numpy.mean()函数可以直接计算数组或列表的均值。
相关问题
python如何小数求均值
Python中可以使用内置的sum()函数和len()函数来求小数的均值。
例如,假设有一个包含浮点数的列表numbers:
```
numbers = [2.5, 3.0, 4.5, 1.5]
```
那么可以使用以下代码来计算它们的均值:
```python
average = sum(numbers) / len(numbers)
print("Average is:", average)
```
输出:
```
Average is: 2.875
```
其中,sum(numbers)计算了所有数字的和,len(numbers)计算了数字的数量,然后用和除以数量得到平均值。
当然,也可以使用numpy库来计算均值,更加方便和高效。例如:
```python
import numpy as np
numbers = [2.5, 3.0, 4.5, 1.5]
average = np.mean(numbers)
print("Average is:", average)
```
输出:
```
Average is: 2.875
```
numpy.mean()函数可以直接计算数组或列表的均值。
Python用两种方法编写求任意一组数的最大和最小数的函数,并求三组数的最大、最小的差值的均值
回答:
方法一:
def max_min(nums):
return max(nums), min(nums)
nums1 = [1, 2, 3, 4, 5]
nums2 = [10, 20, 30, 40, 50]
nums3 = [100, 200, 300, 400, 500]
max1, min1 = max_min(nums1)
max2, min2 = max_min(nums2)
max3, min3 = max_min(nums3)
diff1 = max1 - min1
diff2 = max2 - min2
diff3 = max3 - min3
mean_diff = (diff1 + diff2 + diff3) / 3
print("Max and Min of nums1: ", max1, min1)
print("Max and Min of nums2: ", max2, min2)
print("Max and Min of nums3: ", max3, min3)
print("Mean difference: ", mean_diff)
方法二:
def max_min(nums):
max_num, min_num = nums[0], nums[0]
for num in nums:
if num > max_num:
max_num = num
if num < min_num:
min_num = num
return max_num, min_num
nums1 = [1, 2, 3, 4, 5]
nums2 = [10, 20, 30, 40, 50]
nums3 = [100, 200, 300, 400, 500]
max1, min1 = max_min(nums1)
max2, min2 = max_min(nums2)
max3, min3 = max_min(nums3)
diff1 = max1 - min1
diff2 = max2 - min2
diff3 = max3 - min3
mean_diff = (diff1 + diff2 + diff3) / 3
print("Max and Min of nums1: ", max1, min1)
print("Max and Min of nums2: ", max2, min2)
print("Max and Min of nums3: ", max3, min3)
print("Mean difference: ", mean_diff)
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