It is a logical teaching, which enliven the design of the work with The encrypted data in the social sciences. Logic of discovery problems that arise in the use of statistics, through the introduction to calculation methods, the establishment of a vocabulary of statistics and of basic demographic, and the learning of the reading and interpretation of tables. This is the time to propose elements for learn to read critically the statistical and respond to their uncontrolled use in the public debate.
The first chapter is devoted to the definition of a vocabulary initial to getting started statistics : table numbers, variables, qualitative and nominal, rules for a variable, absolute changes and relative changes…It allows you to address a number of fundamental issues : how to compare numbers or percentages, how to talk about the difference between percentages, how to change ?… Exercise a that accompanies ” progress “, allows you to give elements of method for the choice and the calculation of a reference population. The “Employment” survey of the INSEE carried out in march 1998 provides a workforce of young people (16-25 years old) unemployment 793 000 : what is the population of relevant reference can we report this number ? The population residing in France ? The population of 16-25 years old ? The active population of 16-25 years old ? The explanation of the different possible choices, wrong or more or less relevant to draw attention to frequent errors.
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