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Topics referred to by the same term
Variability is how spread out or closely clustered a set of data is. Look up variability in Wiktionary, the free dictionary. Variability may refer to:
Variability
Hypothesis that human males have more variance in certain traits compared to females
The variability hypothesis, also known as the greater male variability hypothesis, is the hypothesis that human males generally display greater variability
Variability_hypothesis
Variation in the time intervals between heartbeats
Heart rate variability (HRV) is the physiological phenomenon of variation in the time interval between heartbeats. It is measured by the variation in
Heart_rate_variability
Topics referred to by the same term
Solar variability refers to changes in solar activity, such as: Solar variation, the change in the amount of radiation emitted by the Sun (see Solar radiation)
Solar_variability
Spatial variability occurs when a quantity that is measured at different spatial locations exhibits values that differ across the locations. Spatial variability
Spatial_variability
Long-term weather pattern of a region
typically averaged over 30 years. More rigorously, it is the mean and variability of meteorological variables over a time spanning from months to millions
Climate
cardiac beat. Beat-to-beat fluctuations, known as photoplethysmogram variability (PPGV) are found in the signal baseline and amplitude which reflects
Photoplethysmogram variability
Photoplethysmogram_variability
Global climate phenomenon
climate change science, ENSO is known as one of the internal climate variability phenomena. Future trends in ENSO due to climate change are uncertain
El_Niño–Southern_Oscillation
Change in the statistical distribution of climate elements for an extended period
Climate variability includes all the variations in the climate that last longer than individual weather events, whereas the term climate change only refers
Climate variability and change
Climate_variability_and_change
Difference in DNA among individuals or populations
While many factors can cause genetic variability, some factors can also decrease genetic variability. Species variability refers to the observable differences
Genetic_variation
Quantificational variability effect (QVE) is the intuitive equivalence of certain sentences with quantificational adverbs (Q-adverbs) and sentences without
Quantificational variability effect
Quantificational_variability_effect
Statistical property quantifying how much a collection of data is spread out
In statistics, dispersion (also called variability, scatter, or spread) is the extent to which a distribution is stretched or squeezed. Common examples
Statistical_dispersion
Ecological theory
The Spectral Variability Hypothesis (SVH) states that spatial variability in the reflectance of vegetated surfaces relates to plant species richness. It
Spectral variability hypothesis
Spectral_variability_hypothesis
Range of possible values for any characteristic of human beings
Human variability, or human variation, is the range of possible values for any characteristic, physical or mental, of human beings. Frequently debated
Human_variability
QT interval variability (QTV) refers to the physiological phenomenon of beat-to-beat fluctuations in QT interval of electrocardiograms. Increased QTV
QT_interval_variability
Formula for measuring financial risk
(also known as the Sharpe index, the Sharpe measure, and the reward-to-variability ratio) measures the performance of an investment such as a security or
Sharpe_ratio
Closeness of agreement between successive measurements
causes test–retest variability. Such variability can be caused by, for example, intra-individual variability and inter-observer variability. A measurement
Repeatability
Variety and variability of life forms
Biodiversity is the variability of life on Earth. It can be measured on various levels, for example, genetic variability, species diversity, ecosystem
Biodiversity
Relative measure of dispersion expressed as the ratio of standard deviation to the mean
{\displaystyle CV={\frac {\sigma }{\mu }}.} It shows the extent of variability in relation to the mean of the population. The coefficient of variation
Coefficient_of_variation
Checking of an electric circuit to see if current flows
In electronics, a continuity test is the checking of an electric circuit to see if current flows (that it is in fact a complete circuit). A continuity
Continuity_test
Intense physical sensation of sexual release
stroke. There is some research suggesting that greater resting heart rate variability is associated with orgasms through penile-vaginal intercourse without
Orgasm
Form of distribution marketing
to suppliers tend to have a larger variability than sales to buyers, which results in an amplified demand variability upstream. In part, this results in
Bullwhip_effect
The Tropical Atlantic Variability (TAV) is influenced by internal interaction and external effects. TAV can be discussed in different time scales: seasonal
Tropical_Atlantic_Variability
Measure of consensus in ratings given by multiple observers
"the proportion of variance of an observation due to between-subject variability in the true scores". The range of the ICC may be between 0.0 and 1.0
Inter-rater_reliability
Difference between the anatomical structures
An anatomical variation, anatomical variant, or anatomical variability is a presentation of body structure with morphological features different from
Anatomical_variation
Electrical power generation from wind
other generation plants and daily changes in electrical demand, but the variability of intermittent power sources such as wind power is more frequent than
Wind_power
Climate cycle that affects the surface temperature of the North Atlantic
Oscillation (AMO), also known as Atlantic Multidecadal Variability (AMV), is the theorized variability of the sea surface temperature (SST) of the North Atlantic
Atlantic multidecadal oscillation
Atlantic_multidecadal_oscillation
In cell biology, single-cell variability occurs when individual cells in an otherwise similar population differ in shape, size, position in the cell cycle
Single-cell_variability
is an oceanographic and meteorological phenomenon affecting climate variability over the Pacific basin and beyond on interdecadal time scales. The term
Interdecadal Pacific oscillation
Interdecadal_Pacific_oscillation
Scientific study of climate
period of time. The main topics of research are the study of climate variability, mechanisms of climate changes and modern climate change. This topic
Climatology
Genetic diversity in human populations
this variation accounts for a small portion (~15%) of human genome variability. The majority of variation exists within the members of each human population
Human_genetic_variation
Statistical technique for estimating sampling variability
replication (BRR) is a statistical technique for estimating the sampling variability of a statistic obtained by stratified sampling. Select balanced half-samples
Balanced_repeated_replication
In quality control, multi-vari charts are a visual way of presenting variability through a series of charts. The content and format of the charts has
Multi-vari_chart
Area of scientific research
factors. It has also been hypothesized that there is slightly higher variability in male scores in certain areas compared to female scores, leading to
Sex differences in intelligence
Sex_differences_in_intelligence
Design of experiments to collect similar contexts together
These variables are chosen carefully to minimize the effect of their variability on the observed outcomes. There are different ways that blocking can
Blocking_(statistics)
Measurement of blood oxygen saturation
is derived manually from monitor pixels. Pleth variability index (PVI) is a measure of the variability of the perfusion index, which occurs during breathing
Pulse_oximetry
2021 book by Daniel Kahneman, Olivier Sibony, and Cass Sunstein
decision-making. The authors define noise in human judgment as "undesirable variability in judgments of the same problem" and focus on the statistical properties
Noise: A Flaw in Human Judgment
Noise:_A_Flaw_in_Human_Judgment
optimisation whereby a system is made less sensitive to the effects of random variability, or noise, that is present in that system's input variables and parameters
Robustification
Pregnancy monitoring test
FHR variability, or an absence of FHR variability, does not reliably predict fetal acidemia or hypoxia; lack of moderate baseline FHR variability may
Cardiotocography
Workability and cooperation in producing a measurable output
parts of process capability are: Measure the variability of the output of a process, and Compare that variability with a proposed specification or product
Process_capability
Statistical error
In statistics, sampling errors are incurred when the statistical characteristics of a population are estimated from a subset, or sample, of that population
Sampling_error
Tropical atmosphere element of variability
oscillation (MJO) is the largest element of the intraseasonal (30- to 90-day) variability in the tropical atmosphere. It was discovered in 1971 by Roland Madden
Madden–Julian_oscillation
Star whose brightness fluctuates, as seen from Earth
founded in 1890. The most common kinds of variability involve changes in brightness, but other types of variability also occur, in particular changes in the
Variable_star
NASA mission, launched in 2010 to GSO
magnetic activity in order to understand solar variability and its effects. The Extreme Ultraviolet Variability Experiment (EVE) measures the Sun's extreme
Solar_Dynamics_Observatory
Binary star in the constellation Taurus
(2025-10-21), "On the influence of component orbital motion on the photometric variability of DF Tau", Astrophysical Bulletin, arXiv:2510.18495. Kutra, Taylor;
DF_Tauri
Category of tailored neural networks
models, so to learn and model the deterministic components of the spatial variability (i.e. spatial dependence/autocorrelation, spatial heterogeneity, spatial
Spatial_neural_network
Measurement of the human penis
length and circumference when flaccid and erect. Besides the natural variability of human penises in general, there are factors that lead to minor variations
Human_penis_size
Climatic cooling after the Medieval Warm Period (16th–19th centuries)
variations in Earth's orbit and axial tilt (orbital forcing), inherent variability in global climate, and decreases in the human population (such as from
Little_Ice_Age
Meteorological phenomenon
terrain-induced convective systems, moisture recycling, and spatiotemporal variability of land cover and albedo. The South Pacific convergence zone (SPCZ) is
Intertropical Convergence Zone
Intertropical_Convergence_Zone
Star in the constellation Canis Major
Jerzykiewicz and Christiaan Sterken detected slight (0.12 magnitude) variability in the brightness of HR 2501 during their search for beta Cephei variable
HR_2501
Graphical representations of the variability of data
Error bars are graphical representations of the variability of data and used on graphs to indicate the error or uncertainty in a reported measurement
Error_bar
Interactions that create Earth's climate
carbon and nitrogen cycles. The climate system can change due to internal variability and external forcings. These external forcings can be natural, such as
Climate_system
Latter part of the menstrual cycle
approximately 14 days, recent research suggests that there can be wide variability in luteal phase lengths not just from person to person, but from cycle
Luteal_phase
Psychological effect that people learn more by spreading studying out in time
holds that variability surrounding context is responsible for the spacing effect, not only semantic variability. To test the encoding variability theory,
Spacing_effect
Star in the constellation Cetus
Bibcode:2000A&A...355L..27H. Shen, Dong-Xiang; et al. (1 October 2023). "Variability of Magnetic Hot Stars from the TESS Observations". The Astrophysical
HD_9289
Activity of the vagus nerve
techniques mainly rely on the investigation of heart rate and heart rate variability. In most cases, vagal tone is not measured directly. Instead the processes
Vagal_tone
American paleoclimatologist
NSF-GRFP fellow. Her thesis was titled "Causes and Impacts of Rainfall Variability In Central Mexico on Multiple Timescales". Her research won the Denise
Tripti_Bhattacharya
Monsoon in Indian subcontinent
theories have been proposed to explain the origin, process, strength, variability, distribution, and general vagaries of the monsoon, but understanding
Monsoon_of_South_Asia
Difference between males and females
differences in math skills among the general population. Differences in variability of IQ scores have been observed in studies, with more men falling at
Sex_differences_in_humans
Measures of observational error
precision is a description of random errors (a measure of statistical variability), accuracy has two different definitions: More commonly, a description
Accuracy_and_precision
Learning strategy
and spaced fashions, hence eliminating the spacing effect. Encoding variability and assumes the benefits of spacing appear because spaced presentations
Distributed_practice
runoff comes from areas of very low climatic variability, the total global runoff is generally of low variability. Indeed, even in most arid zones, there tends
Water_distribution_on_Earth
Perception of out-group members as being similar to each other
diverse". Perceivers tend to have impressions about the diversity or variability of group members around those central tendencies or typical attributes
Out-group_homogeneity
Subdivision of pharmacology
development. A major focus of pharmacometrics is to understand variability in drug response. Variability may be predictable (e.g., due to differences in body weight
Pharmacometrics
Mineral containing rare-earth elements
reddish-brown phosphate mineral that contains rare-earth elements. Due to variability in composition, monazite is considered a group of minerals. The most
Monazite
Pressure exerted by circulating blood upon the walls of arteries
pressure varies over longer time periods (months to years) and this variability predicts adverse outcomes. Blood pressure also changes in response to
Blood_pressure
Poorly understood class of astronomical objects
rather than steeply rising infrared spectrum, and display very little variability between themselves. In July 2025 it was proposed that LRDs were instead
Little red dot (astronomical object)
Little_red_dot_(astronomical_object)
Statistical hypothesis test
between-group variability within-group variability . {\displaystyle F={\frac {\text{between-group variability}}{\text{within-group variability}}}.} The "explained
F-test
Personality disorder
adolescence and early adulthood. The prognosis for ASPD is complex, with high variability in outcomes. Individuals with severe ASPD symptoms may have difficulty
Antisocial personality disorder
Antisocial_personality_disorder
Difference of a temperature from a reference value
temperatures than another of +3 °C from a region with normally large variability. For this purpose, anomalies are often shown as 'standardized anomalies'
Temperature_anomaly
Concept that permeates much of inferential statistics and descriptive statistics
deviations is an unscaled, or unadjusted measure of dispersion (also called variability). When scaled for the number of degrees of freedom, it estimates the
Partition_of_sums_of_squares
Warm weather period, 250 BC to AD 400
Dendrochronological evidence from wood found at the Parthenon shows variability of climate in the 5th century BC, which resembles the modern pattern
Roman_Warm_Period
American market researcher and psychophysicist
of options for consumers, Moskowitz pioneered the idea of intermarket variability as applied to the food industry. Moskowitz earned undergraduate degrees
Howard_Moskowitz
Research study variability considered during meta-analytic, systematic reviews
studies would hence be homogeneous). Study heterogeneity denotes the variability in outcomes that goes beyond what would be expected (or could be explained)
Study_heterogeneity
Climate scientist
Meteorological Society (2021) Holland, Marika M (1997). Climate change and variability in a single column coupled sea ice/ocean mixed layer model (Thesis).
Marika_Holland
Extrasolar free-floating planet
being older than previously thought. It has a mass of 8.3 ± 0.5 MJ. Variability was first detected with the New Technology Telescope, showing a rotation
PSO_J318.5−22
Star in the constellation of Coma Berenices
prototype for the FK Comae Berenices (FK Com) class of variable stars. The variability of FK Com stars may be caused by large, cool spots on the rotating surfaces
FK_Comae_Berenices
Recurring pattern of climate variability
oscillation (PDO) is a robust, recurring pattern of ocean-atmosphere climate variability centered over the mid-latitude Pacific basin. The PDO is detected as
Pacific_decadal_oscillation
There are no world records in rowing due to the huge variability that weather conditions can have on times. Instead, there are world best times, which
List of world best times in rowing
List_of_world_best_times_in_rowing
variability property, unless the sequence is infinite and ⋃ i I i {\displaystyle \bigcup _{i}I_{i}} is bounded. Intuitively, the finite variability property
Signal_(model_checking)
In rowing, there are no world records due to the variability of weather conditions. Instead there are world best times, which are set over the international
List of Olympic best times in rowing
List_of_Olympic_best_times_in_rowing
North Atlantic regional climate era, c. 950 - c. 1250
changes in ocean circulation. Modelling evidence has shown that natural variability is insufficient on its own to explain the MWP and that an external forcing
Medieval_Warm_Period
Star in the constellation Reticulum
hours and showed strong variability in all 4 light curves. The researchers claim it is the perfect candidate for variability study with JWST. WISE 0359−5401
WISE_0359−5401
System of surface and deep currents in the Atlantic Ocean
this weakening is due to climate change or the circulation's natural variability over millennia. Climate models predict the AMOC will further weaken during
Atlantic meridional overturning circulation
Atlantic_meridional_overturning_circulation
same way as lexical variability is the mirror image of repetition. According to Jarvis's model, lexical diversity includes variability, volume, evenness
Lexical_diversity
Group of eudicots known as core eudicots
for about 65% of the species richness of the angiosperms, with wide variability in habit, morphology, chemistry, geographic distribution, and other attributes
Pentapetalae
Measure of divergence between populations
following three steps: choice of variability choice of specific region of DNA or RNA the use of technique The choice of variability depends on the intended outcome
Genetic_distance
Random variability in quantities arising in cellular biology
Cellular noise is random variability in quantities arising in cellular biology. For example, cells which are genetically identical, even within the same
Cellular_noise
Swedish meteorologist (born 1935)
research interests include climate sensitivity, extreme events, climate variability and climate predictability. Bengtsson was head of research at the European
Lennart_Bengtsson
Fluctuations in stellar radius
regular light curves. This regular behavior is in contrast with the variability of stars that lie parallel to and to the high-luminosity/low-temperature
Stellar_pulsation
Directed movement of body parts to accomplish an action
that variability is always present in movement, and it categorizes it into two types: (1) bad variability and (2) good variability. Bad variability affects
Motor_coordination
Sleep disorder
often used to recover sleep debt, may result in greater sleep timing variability across the week. This irregularity, rather than catch-up sleep itself
Social_jetlag
Waterfall on the Zambezi River in Zambia and Zimbabwe
infrastructure at the site. Research in the late 2010s found that precipitation variability due to climate change is likely to alter the character of the falls.
Victoria_Falls
Tropical atmospheric circulation feature
heaviest rains are located. Shifts in the ITCZ associated with the seasonal variability of the Hadley circulation cause monsoons. The sinking branches of the
Hadley_cell
Peoples who forage or hunt for most or all of their food
carbohydrate resources. Hunter-gatherer societies manifest significant variability, depending on climate zone/life zone, available technology, and societal
Hunter-gatherer
Attraction on the basis of sexual desire
lesbian or counted as such. Another study was done to investigate the variability in sexual preferences throughout human lifespan. Members of the LGBTQ+
Sexual_attraction
Astronomical observatory in Chile
Nicolaia. In 2009, the telescope was dedicated to the LaSilla–Quest Variability Survey, by Yale's Department of Astronomy, and has since been used for
La_Silla_Observatory
Rare disease which results in brain inflammation
time, seizures, decreased breathing, and blood pressure and heart rate variability typically occur. In some cases, patients may develop catatonia. About
Anti-NMDA receptor encephalitis
Anti-NMDA_receptor_encephalitis
Overall consistency of a measure in statistics and psychometrics
to determine how much of the variability in test scores is due to measurement errors and how much is due to variability in true scores (true value). A
Reliability_(statistics)
Gaining awareness of biological processes
rate at that moment. The statistical variability of that interbeat interval is what we call heart rate variability. The ECG method is more accurate than
Biofeedback
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n.
Variability in chemical constitution without variation in crystalline form.
n.
The quality or state of being variable; variability.
n.
The quality or state of being variable; variableness.
n.
The power possessed by living organisms, both animal and vegetable, of adapting themselves to modifications or changes in their environment, thus possibly giving rise to ultimate variation of structure or function.