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The organisation of data: the presentation of data I; the presentation of data II; approximation and error; the averaging of data; the time series - analysis of trend; the time series - deseasonalisation and forecasting; index numbers; dispersion; the normal distribution; probability; decision criteria; probability distributions; sample design; planning a sample survey; sampling theory; quality control; estimation; hypothesis testing; statistical significance; the Chi square test; regression and correlation; statistical sources; answers to questions.