Jisho

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Na-adjective (keiyodoshi), Noun which may take the genitive case particle 'no', Noun
1. significant; meaningful​
Noun which may take the genitive case particle 'no', Na-adjective (keiyodoshi), Noun
2. intentional; volitional​
Wikipedia definition
3. Statistical significance​In statistics, a result is called statistically significant if it is unlikely to have occurred by chance. The phrase test of significance was coined by Ronald Fisher. As used in statistics, significant does not mean important or meaningful, as it does in everyday speech. Research analysts who focus solely on significant results may miss important response patterns which individually may fall under the threshold set for tests of significance.
Read “Statistical significance” on English Wikipedia
Read “有意” on Japanese Wikipedia
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