This is the 2653rd most frequent Polish word.
badanych
"Badanych" means "of the respondents" or "of the studied/examined (people)."
In this sentence, 'badanych' refers to the group of people being studied.
W badaniu wzięło udział stu badanych.
One hundred participants were involved in the study.
Here, 'badanych' refers to the individuals whose opinions were collected during the study.
Opinie badanych były zróżnicowane.
The opinions of the participants were varied.
'Badanych' in this context describes the people participating and responding in a survey or study.