interval estimate
Very LowTechnical / Academic
Definition
Meaning
In statistics, a range of values, calculated from a data sample, that is likely to contain the true value of an unknown population parameter with a specified level of confidence.
A statistical estimate expressed as a range (e.g., 95% confidence interval) rather than a single point, quantifying the uncertainty of the estimate. It can also refer more generally in various technical fields to an approximation bounded by an upper and lower limit.
Linguistics
Semantic Notes
This is a statistical compound term where 'interval' specifies the type of 'estimate'. It is inherently technical, with precise, quantifiable boundaries defined by confidence or credibility levels. It is not used in its literal word-by-word sense (e.g., estimating an interval of time).
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Minor potential variations in phrasing (e.g., 'confidence interval' is universal, but phrasing around it might differ: 'construct an interval estimate' vs. 'calculate an interval estimate').
Connotations
Purely technical and neutral in both varieties.
Frequency
Identically low and confined to statistics/methodology contexts in both varieties.
Vocabulary
Collocations
Grammar
Valency Patterns
interval estimate of [parameter]interval estimate for [parameter]interval estimate with [confidence level]interval estimate based on [data/sample]Vocabulary
Synonyms
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Used in market research, forecasting, and risk analysis (e.g., 'The interval estimate for next quarter's sales is between £2m and £2.5m.').
Academic
Core term in statistics, empirical research, and scientific papers across social, medical, and natural sciences.
Everyday
Virtually never used in everyday conversation.
Technical
Fundamental concept in data science, econometrics, quality control, and any field involving inferential statistics.
Examples
By Part of Speech
verb
British English
- Researchers will interval-estimate the population proportion from the survey data.
American English
- The team needs to interval-estimate the treatment effect using Bayesian methods.
adjective
British English
- The interval-estimate approach provides more information than a single figure.
American English
- We presented the interval-estimate results in Table 3.
Examples
By CEFR Level
- The scientist did not give one number but a range, called an interval estimate.
- The poll showed 58% support, with an interval estimate between 55% and 61%.
- The 95% interval estimate for the regression coefficient, derived via bootstrapping, excluded zero, indicating a statistically significant effect.
Learning
Memory Aids
Mnemonic
Imagine a target. A POINT ESTIMATE is a single arrow hitting one spot. An INTERVAL ESTIMATE is a circle drawn around that spot showing where the true bullseye is LIKELY to be.
Conceptual Metaphor
KNOWLEDGE AS A RANGE/SPAN (versus a pinpoint). UNCERTAINTY AS WIDTH (a wider interval means more uncertainty).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating word-for-word as 'интервальная оценка' without the statistical context, as it could be misconstrued. In Russian statistical discourse, 'доверительный интервал' (confidence interval) is the overwhelmingly common term.
Common Mistakes
- Using 'interval estimate' to refer to estimating a period of time (e.g., 'We interval-estimated the journey to take 2 hours').
- Confusing 'interval estimate' with 'range' in a non-statistical sense.
- Using it without specifying the associated confidence/probability level.
Practice
Quiz
What is the primary purpose of an interval estimate?
FAQ
Frequently Asked Questions
In frequentist statistics, 'confidence interval' is the most common type of interval estimate. 'Interval estimate' is the broader category, which also includes 'credible intervals' in Bayesian statistics.
In practice, no. A 100% interval for a continuous parameter would typically be infinitely wide (e.g., from negative to positive infinity) and thus useless. Intervals (like 90%, 95%, 99%) trade off confidence for precision.
The width reflects the precision of the estimate. A narrower interval suggests greater precision (less uncertainty), while a wider interval suggests less precision (more uncertainty), assuming the same confidence level.
No. Interval estimates can be constructed for various population parameters, including proportions, variances, differences between means, regression coefficients, and more.