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Statistics Symbols — Complete Index
Essential symbols for data analysis, probability theory, and statistical modeling. From basic averages to complex distribution functions.
1) Descriptive Statistics
| Symbol | Meaning |
|---|---|
| μ | Population Mean |
| x̄ | Sample Mean |
| σ | Standard Deviation |
| σ² | Variance |
| N | Population Size |
| n | Sample Size |
2) Probability
| Symbol | Meaning |
|---|---|
| P(A) | Probability of event A |
| P(A|B) | Conditional Probability |
| E[X] | Expected Value |
| Var(X) | Variance of X |
| Cov(X,Y) | Covariance |
3) Hypothesis Testing
| Symbol | Meaning |
|---|---|
| H₀ | Null Hypothesis |
| H₁ | Alternative Hypothesis |
| α | Significance Level |
| p | p-value |
| χ² | Chi-squared |