https://jp.surveymonkey.com/mp/margin-of-error-calculator/
日別: 2021-08-31
Dunbar’s number 150
https://en.wikipedia.org/wiki/Dunbar%27s_number
Nummenmaa Lab
https://emotion.utu.fi/media/
https://jp.surveymonkey.com/mp/margin-of-error-calculator/
https://en.wikipedia.org/wiki/Dunbar%27s_number
https://emotion.utu.fi/media/