Glossary
Survey glossary
The terms you'll meet when designing and analyzing surveys, in plain language.
- Survey
- A structured set of questions used to gather information from a group of people about their opinions, behaviors, or… Read the full definition
- Sample
- A subset of people selected from a larger population to take part in a survey, chosen to represent the whole group. Read the full definition
- Sample size
- The number of people who actually complete a survey. A larger sample size generally makes results more reliable, though… Read the full definition Calculate the sample size
- Margin of error
- A range, usually written as plus or minus a percentage (for example, ±5%), that shows how much the sample results may… Read the full definition Calculate the margin of error
- Confidence level
- The probability, commonly set at 95%, that the true population value falls within the survey's margin of error if the… Read the full definition
- Response rate
- The percentage of people invited to a survey who actually complete it. A low response rate can reduce how reliable the… Read the full definition
- Net Promoter Score (NPS)
- A loyalty metric based on a single question: how likely someone is to recommend on a scale of 0 to 10. It is the… Read the full definition Calculate your NPS
- CSAT (customer satisfaction)
- A measure of how satisfied customers are with a product, service, or interaction. It is usually asked with a rating… Read the full definition
- CES (customer effort score)
- A measure of how much effort a customer had to make to complete a task, such as resolving an issue or making a… Read the full definition
- Likert scale
- A rating scale, typically with five or seven points ranging from "strongly disagree" to "strongly agree", used to… Read the full definition
- Open-ended question
- A question that lets people answer in their own words instead of choosing from preset options. It provides rich detail… Read the full definition
- Non-response bias
- A distortion that occurs when the people who do not respond differ systematically from those who do, so the results no… Read the full definition
- Employee Net Promoter Score (eNPS)
- A metric based on how likely, from 0 to 10, an employee is to recommend the organization as a place to work. It is the… Read the full definition
- Brand awareness
- The extent to which a population recognizes or recalls a brand. Unaided recall is asked before showing names or logos… Read the full definition
- ESG questionnaire
- A structured instrument for collecting evidence about an organization's or supplier's environmental, social and… Read the full definition
- Supplier scorecard
- A periodic assessment that scores suppliers using defined criteria and weights, such as delivery, quality, service… Read the full definition
- Sampling bias
- A distortion caused by a selection method that makes some population members more or less likely to enter the sample… Read the full definition
- Matrix question
- A question that presents several statements or aspects as rows and one shared response scale as columns. It reduces… Read the full definition
- MCP (Model Context Protocol)
- An open protocol that lets an AI application discover and use tools and resources exposed by a server through defined… Read the full definition