基本统计方法

基本统计方法

通过用户输入一组数据(用户一个一个输入)，然后计算数据的中位数/平均数/方差/求和

nums = []

while True:
    num1 = input("请输入数字(按Q退出)：")
    if num1 == 'Q':
        break
    nums.append(int(num1))

# 中位数
def get_median(nums):
    nums.sort()
    nums_len = len(nums)
    if nums_len % 2 == 0:
        print("中位数：",(nums[int(nums_len / 2 - 1)] + nums[int(nums_len / 2)])/2)
    else:
        print("中位数：",nums[nums_len // 2])
get_median(nums)

# 求和
def get_sum(nums):
    count = 0
    for i in nums:
        count += int(i)
    return count
count = get_sum(nums)
print('和:',count)

# 平均数
def get_average(nums):
    count = get_sum(nums)
    average_count = count/len(nums)
    return average_count
average_count = get_average(nums)
print("平均数：",average_count)

# 方差
def get_variance(nums):
    average_count = get_average(nums)
    variance_count = 0
    for i in nums:
        variance_count += pow(i-average_count,2)
    return variance_count
variance_count = get_variance(nums)
print("方差：",variance_count)