There are various different models which seek to represent how an intervention changes important socio-economic variables. Such models are normally taken from previous research. The main types of models are: (i) input-output models, which allow a researcher to systematically examine the linkages between the different parts of an economy, as the inputs of one industry can be thought of as the outputs of other industries; (ii) microeconomic models, which are designed to examine the behaviour of households and firms in specific industries and markets using equations which represent the supply and demand functions for a particular good or service; (iii) macroeconomic models, which are used to model the behaviour of the economy as a whole and the evolution of important macroeconomic variables (such as inflation, employment, growth and the trade balance) over time; and, (iv) statistical models, which are frequently used to examine relationships between specific programme effects. See also data analysis, statistical analysis.
To dream of a model, foretells your social affairs will deplete your purse, and quarrels and regrets will follow. For a young woman to dream that she is a model or seeking to be one, foretells she will be entangled in a love affair which will give her trouble through the selfishness of a friend.