variability index

USAGE SUMMARY

The phrase "variability index" is correct and usable in written English.
It can be used in contexts related to statistics, data analysis, or any field where measuring variability is relevant. Example: "The variability index of the dataset indicates a high level of dispersion among the values."

✓ Grammatically correct

Science

Academia

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

For each variable analyzed a variability index was calculated, defined as the standard deviation of the mean values of each variable during the 10-minute ventilation.

Critical Care

Candidate variables are identified as objects having high variability index values compared to other objects of similar brightness.

Astronomy and Computing

The variability index value of 10 indicates that this source is definitely variable.

Harvard University

QT variability index (QTVI) was calculated.

Stanford University

A variability index was calculated for each PWV measurement.

Stanford University

Using PWV measurements with a variability index ≤0.25 (48 neonates), the intra-class coefficient was 0.69.

Stanford University

Increased relative PR variability index suggests inhomogeneous AV conduction in stable coronary atherosclerosis.

Journal of Electrocardiology

A variability index is generated for each test point on the structure.

Journal of Sound and Vibration

Adjusted by normalized heart rate variance, QT variability index was significantly higher in women than in men (-1.54±0.38 vs. -1.70±0.33; P = 0.017).

Stanford University

Noninvasive measurement of digital plethysmographic variability index (PVIdigital) has been proposed to predict fluid responsiveness, with conflicting results.

Journal of Cardiothoracic and Vascular Anesthesia

Different risk measures such as "variability index", "downside risk" and "conditional value at risk" are integrated within the proposed model.

Journal of Manufacturing Systems

Expert writing Tips

Best practice

When reporting a "variability index", always clearly define how it was calculated, as there are multiple methods, and the specific formula impacts interpretation.

Common error

Avoid assuming a higher "variability index" always indicates a negative outcome. The interpretation depends on the context; increased variability can sometimes signal a beneficial adaptive response.

Linguistic Context

The phrase "variability index" functions as a noun phrase that identifies a quantitative measure of the degree to which data points in a set differ from each other. It’s used to represent the amount of dispersion within a distribution. Ludwig AI confirms its usability across different scientific fields.

Expression frequency: Very common

Frequent in

Science

73%

Academia

27%

Formal & Business

0%

Less common in

News & Media

0%

Encyclopedias

0%

Wiki

0%

Ludwig's WRAP-UP

The phrase "variability index" is a grammatically sound and frequently used term, primarily within scientific and academic fields, to quantify the degree of dispersion or fluctuation within a dataset. As Ludwig AI confirms, it serves to measure and communicate the extent of variation, aiding in the assessment of stability and risk. While widely used, it's crucial to define the calculation method used, as different methods exist, such as standard deviation or the coefficient of variation. Alternatives like "variation measure" or "dispersion indicator" can be used depending on the specific nuance you wish to convey. Avoid misinterpreting a high "variability index" as always negative; context is key, as it can sometimes represent a beneficial adaptation.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

variation measure

Replaces "index" with "measure", focusing on the quantification aspect of variability.

index of dispersion

Similar to the original phrase, but emphasizes the broader concept of dispersion.

dispersion indicator

Uses "dispersion" to highlight the spread of data and "indicator" as a general term for measurement.

fluctuation metric

Emphasizes the changes or fluctuations being measured, using "metric" for a quantitative assessment.

volatility measure

Highlights the degree of instability or change, often used in financial contexts.

degree of fluctuation

Highlights the intensity of change or oscillation.

range of variation

Focuses on the extent of difference within a dataset, rather than a specific calculated value.

coefficient of variation

A specific statistical measure of relative variability, normalized by the mean.

statistical dispersion

More general statistical term referring to the spread of the data.

measure of inconsistency

Focuses on the irregularity and lack of uniformity.

FAQs

How is a "variability index" calculated?

The calculation of a "variability index" depends on the specific application. Common methods include standard deviation, interquartile range, or the coefficient of variation. The method should always be clearly defined.

What does a high "variability index" indicate?

A high "variability index" suggests a greater degree of fluctuation or dispersion in the measured data. However, the implications of this variability depend on the context of the study.

Is there a difference between a "variability index" and a "coefficient of variation"?

A "variability index" is a general term. The "coefficient of variation" is a specific type of variability index that normalizes the standard deviation by the mean.

What are some alternatives to using the term "variability index"?

Depending on the context, you could use terms such as "variation measure", "dispersion indicator", or "fluctuation metric".