平均
A number expressing the central or typical value in a set of data, in particular the mode, median, or (most commonly) the mean.
Examples
3 of 5日本人の平均寿命は世界でも高い。
The average life expectancy of Japanese people is high in the world.
世帯あたりの平均所得が減少傾向にある。
Average household income is on a downward trend.
まあ、平均的なレベルだね。
Well, it's about an average level.
Word Family
Memory Tip
Hei (flat/even) + Kin (balanced/equal). Making everything flat and equal.
Quick Quiz
このクラスの身長の（ ）は165センチです。
Correct!
The correct answer is: 平均
Examples
日本人の平均寿命は世界でも高い。
everydayThe average life expectancy of Japanese people is high in the world.
世帯あたりの平均所得が減少傾向にある。
formalAverage household income is on a downward trend.
まあ、平均的なレベルだね。
informalWell, it's about an average level.
サンプル全体の平均値を算出し、比較を行った。
academicWe calculated the average value of the entire sample and made comparisons.
我が社の平均残業時間は、月に20時間です。
businessThe average overtime hours at our company is 20 hours per month.
Word Family
Common Collocations
Common Phrases
平均して〜だ
on average, it is...
平均を出す
to calculate the average
平均以上の
above average
Often Confused With
Heikin is the mathematical mean; Hyoujun is the 'standard' or 'norm'.
Usage Notes
Very frequent in academic contexts involving statistics and data reporting.
Common Mistakes
Avoid confusion with 'byoudou' (equality/fairness). Heikin is only about numerical average.
Memory Tip
Hei (flat/even) + Kin (balanced/equal). Making everything flat and equal.
Word Origin
Sino-Japanese.
Grammar Patterns
Quick Quiz
このクラスの身長の（ ）は165センチです。
Correct!
The correct answer is: 平均
Related Vocabulary
More academic words
標本
B2A small part or quantity intended to show what the whole is like; a sample. In statistics, it refers to a subset of a population used for research.
重要性
B1The state or fact of being of great significance or value.
適切
B1Suitable or proper in the circumstances; appropriate.
手順
B1A series of actions conducted in a certain order or manner. Crucial for describing methodologies or processes in academic tasks.
構成
B1The way in which a whole or mixture is made up. In academic contexts, it refers to the organization of an essay, the composition of a substance, or the structure of a group.
利点
B1A condition or circumstance that puts one in a favorable or superior position; an advantage. Vital for IELTS 'Advantages and Disadvantages' essays.
課題
B1A task or piece of work to be done. It also refers to a problem or issue that needs to be addressed or solved.
関連
B1A connection or relationship between two or more things. It describes how one thing is linked to another.
理論
B1A supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.
意義
B1The significance, value, or meaning of something, especially in a social or academic context.
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