March 2018
Intermediate to advanced
528 pages
13h 2m
Portuguese (Portugal, Brazil)
Content preview from R para Data Science
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152 | Capítulo 9: Arrumando Dados com tidyr
• A maioria das pessoas não está familiarizada com os princípios de dados tidy, e
é difícil derivá-los sozinho, a não ser que você passe muito tempo trabalhando
com dados.
•
Os dados frequentemente são organizados para facilitar algum outro uso que
não seja a análise. Por exemplo, facilitar o máximo possível a entrada.
Isso significa que, para a maioria das análises reais, você precisará fazer alguma arru-
mação. O primeiro passo é sempre descobrir quais são as variáveis e as observações.
Às vezes é fácil, e outras vezes você precisará consultar as pessoas que originalmente
geraram os dados. O seg
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