ECO 105 MEASURES OF CENTRAL TENDENCY

Arithmetic Mean

The formula for Ungrouped Observations

The formula for Grouped Observation

Geometric Mean

The formula for Grouped Data

Harmonic Mean

The Median

Ungrouped Data

Grouped Data

Mode of Ungrouped Data

Relationship between Mean, Median, and Mode

Empirical Relationship between Mean, Median, and Mode

Quartiles and Percentiles