This is a powerful yet simple tool that provides an analysis of cumulative results as they are obtained.
Provided questions are framed correctly sequential analysis can yield statistically significant answers with relatively small samples (8-25 respondents).
As well as helping solidify survey results where budgets (and/or samples) are small, sequential analysis allows intelligent decisions within ongoing studies by eliminating or further opening particular options available to respondents.
Sequential analysis can be applied to questions that have answers framed as a dichotomy: A or B, Yes or No (no preference/ don’t know replies are also possible).
Answers are plotted within boundaries that when reached will provide a highly definitive answer.