January 2010
Beginner
480 pages
15h 36m
Portuguese (Portugal, Brazil)
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266 Capítulo 9
o maestro dos histogramas
O R cria lindos histogramas
O que você
entende com este
histograma?
Com os histogramas, as áreas abaixo
das barras não medem somente a
contagem (ou frequência) da coisa
a ser medida; elas também mostram
a porcentagem de todos os dados
representados por segmentos
individuais.
Analise cuidadosamente o
contorno da curva. Poucas
coisas são óbvias. Não
houveram muitas pessoas com
aumentos abaixo de 0% ou
acima de 22%.
Mas o que está acontecendo no
meio da distribuição?
Muitas pessoas
tiveram um
aumento em
torno de 5%.
Essas são as maiores
porcentagens de aumento.
Aqui, a frequência se
refere ao número de
pessoas. ...
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