Techniques

Questionnaires are made using different types of response scales according to the purpose of the study and the question to be applied. Some scales: nominal, scale-ratio, ordinal, interval, sorting, comparing, semantic, associative, attitudinal difference, relevance, constant sum, Likert Scale, Thurstone Scale, Stapel Scale. Quantitative studies are always accompanied by a sampling plan, being probabilistic and non-probabilistic.