## Science and mathematics::Level

### ::concepts

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Science and mathematics

• Level (algebra), the least number of squares that sum to [itex]-1[/itex] in a field
• Level set, a set where a function takes on a given constant value
• Level measurement, instrumentation techniques to measure height within a vessel
• Level of measurement, a theory of the kinds of scales or levels used for measuring
• Level (logarithmic quantity), a logarithmic measure defined as the logarithm of a ratio of two like quantities, often expressed in decibels
• Level, for a Categorical variable in statistics, the different values that such a variable can have
• Level, in Applied statistics, the different values that a factor can have
• Level, in the Design of experiments, the different treatments that are applied within a factor
• Classification levels, in Biological organisation, classrooms, churches, hospitals among others
• Energy levels, discrete amounts of energy that can be held by a quantum mechanical system or confined particle

Level sections
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