The purpose of random sampling in a poll is to ensure that

all questions are answered correctly

the respondents are all the same age

the sample is a representative cross-section of the public

the respondents are all the same gender

The purpose of random sampling in a poll is to ensure that the sample is a representative cross-section of the public. In a random sample, no specific people are chosen, they are all chosen at random. This helps to ensure that the sampling is an accurate representation of the public opinion in general and is not skewed.

If you look at the surrounding words, you can get a general basis of what another word for inviolate would be. i would say that it is pristine