## Science and mathematics::Level

### ::concepts

**Level**::levels **Level**::album Magazine::levels Height::jonas French::american Measure::bilal**Science and mathematics**

- Level (algebra), the least number of squares that sum to <math>-1</math> 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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