Blog
Knowledge from practice. Free to use.
Articles on planning, questionnaires, analysis, practice and product news, written from 22 years of working with online surveys.
Market research methods: segmentation and positioning
The main market research methods, how a survey divides your customers into meaningful segments, and where your offer stands against alternatives. With examples.
→ read more
Panel survey: measuring change in a longitudinal study
Panel or trend study? What a panel survey shows, how to link waves by ID and how to deal with panel attrition. With worked examples and a planning checklist.
→ read more
Survey experiment: how to run an A/B test in a survey
How to run an A/B test in a survey: compare two versions by random assignment, plan the group size, and interpret the difference using a confidence interval.
→ read more
Qualitative methods: expert interviews and focus groups
Learn when to use expert interviews and focus groups, how to recruit participants, write a guide, analyze the findings and turn them into a better survey.
→ read more
More articles
11/13/2026PlanningSurvey methods: online, phone, paper or mixed-mode?38 min11/11/2026PlanningSurvey incentives: what works online and what you gain28 min11/11/2026QuestionnaireLevels of measurement: nominal, ordinal, interval and ratio27 min11/11/2026QuestionnaireQuestionnaire pretest: how to test your survey before launch26 min11/11/2026QuestionnaireSocial desirability bias: how to ask sensitive questions28 min11/11/2026PlanningSampling methods: random, quota and cluster sampling27 min11/11/2026PlanningCan AI replace surveys? Why surveys still matter26 min11/11/2026QuestionnaireOpen-ended questions: how to ask and analyze them28 min11/11/2026AnalysisCross-tabulation: how to read and test a contingency table30 min11/11/2026QuestionnaireRating scale: types, examples and how to design one28 min11/11/2026AnalysisP-value and statistical significance, explained simply28 min11/11/2026AnalysisWhich statistical test should I use? A guide with examples30 min11/11/2026AnalysisConfidence interval: how to calculate and interpret it25 min11/11/2026AnalysisCorrelation vs. causation: how to read r and regression27 min11/11/2026AnalysisSurvey data cleaning: which responses count?31 min11/11/2026AnalysisHow to present survey results: from finding to report27 min11/10/2026QuestionnaireQuestionnaire design: structure, question types and checklist28 min11/10/2026AnalysisReliability and validity: Cronbach's alpha, examples, types28 min11/10/2026PlanningSurvey response rate: calculate, assess and increase it31 min11/09/2026PracticeEmployee survey: process, questions and analysis29 min11/08/2026Practice360-degree feedback: process, sample questions and common mistakes20 min11/08/2026PracticeNet Promoter Score (NPS): how to calculate and read it21 min11/08/2026PracticeSecure Customer Index (SCI): calculation and limits18 min11/08/2026PracticeCustomer Satisfaction Score (CSAT): formula and calculator14 min11/08/2026PracticeCustomer Effort Score (CES): calculation, scale, calculator14 min11/04/2026PracticeDelphi method: steps, example and how to define consensus22 min11/03/2026PlanningRepresentative sample: what it is and how to check yours14 min12/05/2025AnalysisAnalyzing online surveys: it starts before you collect data12 min10/12/2025AnalysisThe chi-square test: testing associations between categorical variables9 min08/15/2025QuestionnaireOrder effects in surveys: what they distort and how to avoid them7 min05/15/2025AnalysisThe t-test: comparing means the methodologically clean way10 min04/10/2025AnalysisAggregating multi-item (Likert) scales2 min04/10/2025QuestionnaireLikert scales: everything you ever wanted to know, but never dared to ask9 min04/09/2025QuestionnaireA list of common Likert scales17 min03/20/2025QuestionnaireLatent constructs and multi-item scales6 min02/18/2025PlanningData protection in online surveys15 min01/30/2025ProductImportant updates: raw data, export, automatic reports4 min12/12/2024PracticeCustomer surveys: an overview9 min11/08/2024QuestionnaireWriting questions: how an idea becomes a robust question19 min10/15/2024PlanningPrinciples of survey research1 min11/23/2020PlanningCalculating sample size: technical details explained simply18 min11/01/2020PlanningSample size calculator: calculate your sample size the easy way5 min06/13/2019PlanningHow to write my thesis17 min09/24/2018PlanningWhere do I find respondents for my survey20 min