Frequency distributions: organizing and displaying data - Defining ungrouped and tabulated (frequency table) data - Graphic representation of the frequency distribution - frequency tables -Graphs. • Measures of central tendency from ungrouped data and grouped data (data in a frequency table): mean - median - mode. • Measures of dispersion from grouped and ungrouped data: range - range - standard deviation, coefficient of variation, and skewness. • Principles of correlation analysis (correlation - coefficient of linear correlation and ranks). • Simple linear regression analysis. • Principles of Time Series • Price Index Numbers