472 B
472 B
title, tags
| title | tags |
|---|---|
| weighted_average | math,list,intermediate |
Returns the weighted average of two or more noumbers.
- Use
sum()to sum the products of the numbers by their weight and to sum the weights. - Use
zip()and a list comprehension to iterate over the pairs of values and weights.
def weighted_average(nums, weights):
return sum(x * y for x, y in zip(nums, weights)) / sum(weights)
weighted_average([1, 2, 3], [0.6,0.2,0.3]) # 1.72727