Statistical Formulas

Mode

1. All classes have the same width.

2. The classes have different width.

Median

Arithmetic Mean

Grouped Data

Quartiles

Deciles

Percentiles

Average Deviation

Grouped Data

Variance

Grouped Data

Standard Deviation

Grouped Data

Coefficient of Variation

Standard Scores

Covariance

Linear Correlation Coefficient

Linear Regression

Line of Regression of y on x

Line of Regression of x on y

Central Limit Theorem

N(0, 1)