Symbols Frequently Used in Statistics
Symbols Frequently Used in Statistics
|Symbol |Meaning |Use |
|Σ |Sigma; means “the sum of” | |
|[pic] |Sample mean | |
|[pic] |Mu; Population mean | |
|s |Sample standard deviation | |
|[pic] |Sigma; Population standard deviation | |
|[pic] |Sample variance | |
|[pic] |Population variance | |
|[pic] |Sample proportion | |
|p |Population proportion | |
|n |Number of data values in a sample | |
|z |z score (standardized value) | |
|t |t statistic | |
|C |Confidence level | |
|[pic] |Null hypothesis | |
|[pic] |Alternative hypothesis | |
|Df |Degrees of freedom | |
|[pic] |Normal distribution with mean μ and standard deviation σ | |
|[pic] |Chi-square statistic | |
|β |Power of the Test | |
|[pic] |Combination of n objects in r groups [pic] | |
|[pic] |Probability of event A given B | |
|r |Correlation coefficient | |
|[pic] |Coefficient of determination | |
|Residual |Residual | |
|Q1 |First (lower) quartile | |
|Q3 |Third (upper) quartile | |
|IQR |Interquartile range | |
|M |Median | |
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