How to do better research: sample, questionnaire, and field
Articles on sampling, respondent panels, question types, and data analysis — written by those who run fieldwork every day.
274 articles · page 12 of 23
- Surveys
Why hiring a respondent sample is essential for companies
Hiring a respondent sample has become a strategic necessity in a scenario where decisions need to be made quickly — and with increasing impact. In this context, the quality of information used by companies becomes a decisive competitive advantage. Thus, it is not enough to have access to large volumes of data; it is essential to ensure that they...
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Sample error, what is it?
Sample error is one of the main indicators for evaluating the quality of a survey. Furthermore, it is not enough to analyze isolated numbers; it is necessary to understand the context in which they were produced. In this sense, sample error shows the level of precision of the results and guides a more responsible and secure interpretation of the data….
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Judgment Sampling: How it works and when to apply it
As markets become more complex and research questions grow more sophisticated, the need for methodologies that select truly qualified participants evidently increases. In this scenario, Judgment Sampling (Purposive Sampling) plays a central role because it allows the researcher to strategically choose individuals capable of offering in-depth knowledge and…
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The importance of sample error for reliable research
The importance of sample error is growing in a scenario where companies, governments, and researchers need to make quick decisions supported by data. As most surveys cannot, or do not need to, listen to the entire population, it becomes essential to understand what the acceptable limit of variation is between what the sample…
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Learn how to calculate incidence and avoid errors in surveys
Knowing how to calculate survey incidence is essential for planning the time, sampling, and costs of any study that requires qualified recruitment. In short, incidence indicates the proportion of people who meet the project criteria among all people evaluated. Thus, with this measure in hand, you decide how many interviews you will need to start…
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Why choose convenience sampling?
Convenience sampling frequently appears in research that requires agility. This is because, instead of selecting participants in a structured way, the researcher chooses whoever is most available at the moment. Although it seems simple, and it really is, this method requires constant attention to avoid distorted conclusions. Therefore, understanding how it works and…
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How the Sample Error Calculator Improves Your Research
The sample error calculator is an essential tool for anyone who needs to plan surveys with precision, as it quickly shows how much the results of a sample can deviate from what would be found in the total population. This happens because every sampling process involves statistical uncertainty, and it is precisely this interval of uncertainty that we call...
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What is incidence in research? Concept, impact, and practical application
In the world of opinion, market, and behavioral research, what is incidence in research? The question seems simple, but its answer involves a concept essential for any project that depends on qualified recruitment. Incidence, in objective terms, represents the percentage of people within a larger group who actually meet the established criteria…
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Respondent panel for academic research
A respondent panel for academic research has become a strategic solution in a scenario where scientific production demands increasingly solid, reliable, and representative data. By offering quick and targeted access to participants with specific profiles, this methodology expands the reach of data collection and elevates the quality of analyses. Although...
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Ad hoc research: what it is and how to use it
Ad hoc research stands out as one of the most effective tools for understanding people's behavior in a precise and personalized way. In a scenario where decisions need to be made quickly, this type of study offers tailor-made answers to specific questions and real business challenges. Unlike standardized research, ad hoc research...
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What is systematic sampling and how to apply it in market research
Systematic sampling is a probabilistic technique that combines statistical precision and operational efficiency, being widely used in market research, online studies, and consumer panels. Unlike other methods, which require complex draws or manual divisions, systematic sampling follows a clear, logical, and repeatable pattern, which makes the collection process more...
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How to define the ideal target audience for an opinion poll
Defining the target audience for research is the first step to ensure reliable and representative results in an opinion poll. After all, it's not enough to collect data; you need to know where it comes from. When the respondent group does not reflect the correct profile, conclusions become inaccurate and lose relevance. Therefore, understanding who should...