If you are ok with a 25% margin of error and a 95% confidence level, 16 people is good enough. You have to make sure there isn’t some skew in your population, but if your method of sampling the population produces a skew, adding people won’t really help there.
https://www.surveymonkey.com/mp/sample-size-calculator/
If you are ok with a 25% margin of error and a 95% confidence level, 16 people is good enough. You have to make sure there isn’t some skew in your population, but if your method of sampling the population produces a skew, adding people won’t really help there.