Lab 5 - Heitor Faria

# Lab 5 - Heitor Faria - Lab 5 Introduo Regresso Linear...

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12/09/2016 Lab 5 - Introdução à Regressão Linear 1/13 Lab 5 ­ Introdução à Regressão Linear Professor Dr. Donald Pianto 12 de setembro, 2016 Aluno: Heitor Medrado de Faria Participantes: Carrega o banco de dados MLB11: load ("~/Documentos/LabsAlunos/lab5/mlb11.RData") Exercícios: Exercício 1: Podemos conseguir o coeficiente de correlação das duas variáveis, e dessa forma saber sua “força”: mlb11 %>% summarise ( cor (runs, at_bats)) ## cor(runs, at_bats) ## 1 0.610627 Exercício 2: Aparentemente existe uma correção forte entre as variáveis, na medida que enquanto uma cresce, existe tendência de crescimento da outra. Isso também é explícito pelo coeficiente angular: 1.046, o que indica um crescimento médio bem uniforme entre as variáveis. plot_ss (x = at_bats, y = runs, data = mlb11, showSquares = TRUE)

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12/09/2016 Lab 5 - Introdução à Regressão Linear 2/13 ## Click two points to make a line. ## Call: ## lm(formula = y ~ x, data = pts)

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• Fall '15
• regressão linear, Adjusted R-squared, and 28 df, ﬁle:///home/hfaria/Documentos/LabsAlunos/lab5/lab5.html

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