Problem 44400. 二つのベクトルの要素ごとの積の平均を計算しよう

Created by mizuki

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二つの同じ長さのベクトルが与えられたとき、二つのベクトルの要素ごとの積の平均を求めましょう。
例:
 二つのベクトル [1 2 3] と [10 15 20] が与えられたとき、
 それぞれの要素ごとの積の平均を取ると、
 解は 33.3333 となります。
 途中の計算は (1*10 + 2*15 + 3*20)/3 のようになります。
(英語版) Problem 106. Weighted average <https://www.mathworks.com/matlabcentral/cody/problems/106>

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Last Solution submitted on Sep 20, 2025

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yurenchu on 9 Nov 2017

That's not the correct definition of the concept of "weighted average". Instead, it's rather the average product of two data vectors x and w.

David Verrelli on 11 Nov 2017

I agree with yurenchu. If you want to choose Problems to translate, then first read all comments made about the original Problem statement to see if there are any important critiques to heed. If so, then either address the critiques and create an improved version of the Problem, or else choose a different original Problem.

mizuki on 14 Nov 2017

Changed the translation

David Verrelli on 13 Dec 2017

Very good :-)

Yacine on 1 Oct 2024

can someone translate please?

Christian Schröder on 2 Oct 2024

@Yacine in a nutshell: "calculate the average of the element-wise product of two vectors".

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Problem 44400. 二つのベクトルの要素ごとの積の平均を計算しよう

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Problem 44400. 二つのベクトルの要素ごとの積の平均を計算しよう

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Last 200 Solutions

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Problem Recent Solvers401

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