national average

Noun

The average value for something across a particular nation.

Japanese Meaning

全国平均 / 国全体の平均値

Her city's unemployment rate is well below the national average.

彼女の市の失業率は全国平均を大きく下回っています。

Sense（1）

The average value for something across a particular nation.

House prices in London are higher than the national average.

national averages

（ plural ）