tugas 1

data=read.table(file.choose(),header=T) 
data

##      Y  X1   X2   X3
## 1 57.5  78 2.75 29.5
## 2 52.8  69 2.15 26.3
## 3 61.3  77 4.41 32.2
## 4 67.0  88 5.52 36.5
## 5 53.5  67 3.21 27.2
## 6 62.7  80 4.32 27.7
## 7 56.2  74 2.31 28.3
## 8 68.5  94 4.30 30.3
## 9 69.2 102 3.71 28.7

library(ggplot2)

# Scatter plot antara variabel X1 dan Y
ggplot(data, aes(x = X1, y = Y)) +
  geom_point(color = "#2e8b57", alpha = 0.6, size = 2.5) +
  geom_smooth(method = "lm", se = FALSE, color = "#ff7f50", linewidth = 1) +
  labs(
    title = "Dataset 1: Hubungan Antara X1 dan Y",
    x = "X1",
    y = "Y"
  ) +
  theme_minimal(base_family = "sans") +
  theme(
    plot.title = element_text(face = "bold", size = 14),
    plot.subtitle = element_text(color = "gray40", size = 10),
    panel.grid.minor = element_blank() 
  )

## `geom_smooth()` using formula = 'y ~ x'

# Scatter plot antara variabel X2 dan Y
ggplot(data, aes(x = X2, y = Y)) +
  geom_point(color = "#4b0082", alpha = 0.6, size = 2.5) +
  geom_smooth(method = "lm", se = FALSE, color = "#00bfff", linewidth = 1) +
  labs(
    title = "Dataset 1: Hubungan Antara X2 dan Y",
    x = "X2",
    y = "Y"
  ) +
  theme_minimal(base_family = "sans") +
  theme(
    plot.title = element_text(face = "bold", size = 14),
    plot.subtitle = element_text(color = "gray40", size = 10),
    panel.grid.minor = element_blank() 
  )

## `geom_smooth()` using formula = 'y ~ x'

# Scatter plot antara variabel X3 dan Y
ggplot(data, aes(x = X3, y = Y)) +
  geom_point(color = "#c71585", alpha = 0.6, size = 2.5) +
  geom_smooth(method = "lm", se = FALSE, color = "#32cd32", linewidth = 1) +
  labs(
    title = "Dataset 1: Hubungan Antara X3 dan Y",
    x = "X3",
    y = "Y"
  ) +
  theme_minimal(base_family = "sans") +
  theme(
    plot.title = element_text(face = "bold", size = 14),
    plot.subtitle = element_text(color = "gray40", size = 10),
    panel.grid.minor = element_blank() 
  )

## `geom_smooth()` using formula = 'y ~ x'