• frequency ⪢⪢
The _____ of something is the number of times that it happens.
http://qindex.info/i.php?x=13434

• frequency ⪢⪢
The _____ of rainstorms is very high, especially during the spring.
http://qindex.info/i.php?x=16273

◌◌◌ modulation
frequency, amplitude, quadrature
http://qindex.info/i.php?x=6921

◌◌◌ probability
What is probability | Expected Values, Frequency Distribution, Complement
http://qindex.info/i.php?x=9150

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