Why is it virtually impossible to derive a random sample in LGBTIQ research? Why is it virtually impossible to derive a random sample in LGBTIQ research? there is too much diversity amongst LGBTIQ people to derive a random sample there is no definitive population base from which to draw the sample people who are actively engaged in LGBTIQ communities are most likely to participate and therefore the sample will not be random not enough people are LGBTIQ so a random sample cannot be derived