3494adc4b3
There is a small typo in snippets/weighted_average.md. Should read `numbers` rather than `noumbers`.
19 lines
473 B
Markdown
19 lines
473 B
Markdown
---
|
|
title: weighted_average
|
|
tags: math,list,intermediate
|
|
---
|
|
|
|
Returns the weighted average of two or more numbers.
|
|
|
|
- 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.
|
|
|
|
```py
|
|
def weighted_average(nums, weights):
|
|
return sum(x * y for x, y in zip(nums, weights)) / sum(weights)
|
|
```
|
|
|
|
```py
|
|
weighted_average([1, 2, 3], [0.6, 0.2, 0.3]) # 1.72727
|
|
```
|