The Decibal scale for sound measurement is an example of a logarithmic scale.
The Richter scale, the pH scale, the magnitude scale for stars, the multiplicative
scales on a slide rule
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A logarithmic scale is a scale of measurement that displays the value of a physical quantity using intervals corresponding to orders of magnitude, rather than a standard linear scale.A simple example is a chart whose vertical axis has equally spaced increments that are labeled 1, 10, 100, 1000, instead of 1, 2, 3, 4. Each unit increase on the logarithmic scale thus represents an exponential increase in the underlying quantity for the given base (10, in this case).Presentation of data on a logarithmic scale can be helpful when the data covers a large range of values. The use of the logarithms of the values rather than the actual values reduces a wide range to a more manageable size. Some of our senses operate in a logarithmic fashion (Weber-Fechner law), which makes logarithmic scales for these input quantities especially appropriate. In particular our sense of hearing perceives equal ratios of frequencies as equal differences in pitch. In addition, studies of young children in an isolated tribe have shown logarithmic scales to be the most natural display of numbers by humans.[1]
A logarithmic equation would be any equation that includes the log function.
None. If you have an exact relationship - whether it is linear, polynomial, logarithmic or whatever - probability has no role to play.
Logarithmic Function
One point on a logarithmic graph is not sufficient to determine its parameters. It is, therefore, impossible to answer the question.