College Stat Important Symbols

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Last updated 2:07 PM on 9/23/25
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6 Terms

1
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Mu (µ)

Represents the population mean (average of the entire population).

2
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X-bar (Xˉ)

Represents the sample mean (average of the sample).

3
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Sigma (σ)

Represents the population standard deviation (spread of data in the population).

4
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S (or Sx)

Represents the sample standard deviation (spread of data in the sample).

5
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P

Represents the population proportion (percentage in the whole population).

6
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P-hat (P^)

Represents the sample proportion (percentage in the sample).