... nominate others, and so on. Quota sampling divides the population into subgroups, which are then sampled in proportion to their presence in the population. The key is estimating the percentage in ... that the sample snowballs in size. For example, if you were interested in surveying a certain type of doctor, you might ask the known ones to nominate others, who would in turn be asked to nominate ... you routinely ask your customers for feedback and involve them in your business, they, in turn, become committed to the success of your business. Watch out for … Even the best intentions...