- One idea per person
- Each person sees one idea only, so the ideas never colour each other's scores.
- Screener
- The first questions of a survey, which let in only the people the study is about.
- Quota
- A target number of people of each kind, by age, gender, region or other profile answers, so the sample matches the plan.
- Screen-out and over quota
- A screen-out did not qualify. Over quota means the person qualified after their group was already full.
- Rim weighting
- Adjusting the results to the targets you set for your survey.
- Significance markers
- Markers that show where a difference between groups is significant, so chance differences are not mistaken for real ones.
- Van Westendorp
- Four price questions (too cheap, a bargain, getting expensive, too expensive) that find the range of prices people accept.
- Gabor-Granger
- The share who would buy at each tested price, which shows how demand falls as the price goes up.
- MaxDiff
- People pick the most and the least important item from small sets. Every item gets a score, and the scores add up to 100.
- TURF
- Finds the line-up that reaches the most people: the share who would buy at least one item in it.
- Net Promoter Score
- How likely people are to recommend you, from 0 to 10. Promoters answer 9 or 10, passives 7 or 8 and detractors 0 to 6.
- Theme
- A group of open answers that make the same point, with how many people raised it and the tone.