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How can I estimate the probability of a population reaching some size in the next step, considering that my population size follows a differential model, let's say dP/dt = cP(1-P/K); where c is...
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Open access journals have emerged as an option against the high costs of journal subscriptions. The purpose is to spread knowledge so everyone can read everything that is published. But what is...
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When you are running a multiple regression (linear, logistic, etc.) and you have an explanatory variable that is categorical and presents, let's say, five levels, how do you choose the level to be...
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Believing that only trained personnel works at official statistical agencies (like IBGE in Brazil), I would like to ask why they insist in the presentation of results from studies (census and...
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