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for the same time interval, positive intervals are always timelike. If s 2 {\displaystyle s^{2}} is negative, the spacetime interval is said to be spacelike...

In statistics, a confidence interval (CI) is a range of values used to estimate an unknown statistical parameter, such as a population mean. Rather than...

In music theory, an interval is a difference in pitch between two sounds. An interval may be described as horizontal, linear, or melodic if it refers...

In mathematics, a real interval is the set of all real numbers lying between two fixed endpoints with no "gaps". Each endpoint is either a real number...

octavus: eighth) or perfect octave (sometimes called the diapason) is an interval between two notes, one having twice the frequency of vibration of the other...

tritone is defined as a musical interval spanning three adjacent whole tones (six semitones). For instance, the interval from F up to the B above it (in...

A glacial period (alternatively glacial or glaciation) is an interval of time (thousands of years) within an ice age that is marked by colder temperatures...

measurements used to sequence events, to compare the duration of events (or the intervals between them), and to quantify rates of change of quantities in material...

characterized by particle energies of around 1019 GeV or 109 J, time intervals of around 5×10−44 s and lengths of around 10−35 m (approximately the energy-equivalent...

confidence interval) and for practical reasons of measurement (measurement error). The mathematical effect can be described by the confidence interval or CI...

and an ideal of L. An interval in a poset P is a subset that can be defined with interval notation: For a ≤ b, the closed interval [a, b] is the set of...

This analysis calculates features such as the PR interval, QT interval, corrected QT (QTc) interval, PR axis, QRS axis, rhythm and more. The results from...

classification with four levels, or scales, of measurement: nominal, ordinal, interval, and ratio. This framework of distinguishing levels of measurement originated...

music and dance. With a score composed by Bill Whelan, it originated as an interval act during the Eurovision Song Contest 1994, featuring Irish dancing champions...

The QT interval is a measurement made on an electrocardiogram used to assess some of the electrical properties of the heart. It is calculated as the time...

of the heart after a heartbeat, giving rise to an abnormally lengthy QT interval. It results in an increased risk of an irregular heartbeat which can result...

In Bayesian statistics, a credible interval is an interval used to characterize a probability distribution. It is defined such that an unobserved parameter...

In statistics, interval estimation is the use of sample data to estimate an interval of possible values of a (sample) parameter of interest. This is in...

methods exist:[citation needed] HR = 1000 · 60/(RR interval in milliseconds) HR = 60/(RR interval in seconds) HR = 300/number of "large" squares between...

inference, specifically predictive inference, a prediction interval is an estimate of an interval in which a future observation will fall, with a certain...