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Μμ

MU

μῦ · [m]

The 12th letter of the Greek alphabet.

MATHEMATICS

  • Constant/index; micro prefix (μ) in units.

PROBABILITY

  • Location parameter (μ) in Normal and other families.
  • Theoretical mean when it exists.

STATISTICS

  • Population mean (μ).
  • Estimate: μ̂ (mu-hat) in some texts.

PRONUNCIATION

Ancient Greek
sound [m]
Modern Greek
μι [mi] · sound [m]

IN FORMULAS

  • Z = (X − μ) / σStandardising: how many standard deviations X is from the mean μ.See it explained at morrisonkuhlsen.com →

HOW TO WRITE IT — click to copy

lowercase
uppercasesame as the Latin letter: LaTeX has no command for it

Note: notations vary between books/fields; these are the most common usages.

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