frequency
Definition
- Noun:
- The rate at which something occurs or is repeated over a particular period of time. This is the most common meaning, referring to how often an event happens.
- (Physics) The rate at which a vibration or wave occurs, measured in hertz (Hz). This refers to the number of complete cycles per second of a periodic phenomenon, such as sound or radio waves.
- (Statistics) The number of times a particular value or observation occurs in a dataset.
Usage and Examples
General Usage (How often something happens):
- The frequency of bus services decreases after midnight.
- She noted the increasing frequency of power outages in the neighborhood.
Scientific/Technical Usage (Wave cycles):
- This radio station broadcasts at a frequency of 98.5 MHz.
- Humans can hear sounds with a frequency between 20 and 20,000 Hz.
Statistical Usage (Count of occurrences):
- In the survey, the frequency of 'yes' responses was 150.
- The graph shows the frequency distribution of test scores.
Advanced Usage
"With increasing frequency": Happening more and more often.
- Complaints about the service are arriving with increasing frequency.
"High/Low frequency": In general language, this can describe commonness or rarity. In physics, it describes the specific property of a wave.
- High-frequency words are learned first by language students. (General)
- Dogs can hear high-frequency sounds that are inaudible to humans. (Physics)
Variants and Related Words
- Frequent (adjective): Happening or occurring often at short intervals.
- He is a frequent visitor to the library.
- Frequently (adverb): Often.
- The software is frequently updated.
- Infrequency (noun): The state of being not frequent; rarity.
- Frequency Modulation (FM): A compound term for a specific method of encoding information on a carrier wave by varying its frequency.
Synonyms
- Rate: The speed or frequency with which something happens.
- Commonness: The state or quality of being frequent or occurring often.
- Prevalence: The fact or condition of being prevalent; commonness.
- Hertz (Hz): The unit of frequency in physics, meaning one cycle per second. (This is a specific unit synonym in technical contexts).
Related Phrases and Collocations
- Adverb + Frequency:
- Verb + Frequency:
- Prepositional Phrases:
Noun
-
the number of observations in a given statistical category
-
the ratio of the number of observations in a statistical category to the total number of observations
-
the number of occurrences within a given time period
-
the frequency of modulation was 40 cycles per second
-
the frequency of his seizures increased as he grew older
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