######## 슬라이드 76. 연습문제

[조현숙]

######## 슬라이드 76. 연습문제

# 1번

str(cars)

plot(cars$speed)

plot(cars$dist)

hist(cars$speed)

hist(cars$dist)

str(mpg)

# 2번

str(mtcars)

ggplot(mtcars, aes(x=cyl)) +

geom_bar()

ggplot(mtcars, aes(x=cyl)) +

geom_bar(fill=rainbow(3))

ggplot(mtcars, aes(x=mpg, y=qsec)) +

geom_line()

ggplot(mtcars, aes(x=mpg, y=qsec)) +

geom_point()

ggplot(mtcars, aes(x=mpg, y=qsec, color=gear)) +

geom_point(aes(fill=gear))

ggplot(mtcars, aes(x=mpg)) +

geom_histogram()

ggplot(mtcars, aes(x=mpg)) +

geom_histogram(binwidth = 5)

# mtcars의 cyl(x축), qsec(y축)으로 상자그림 출력(geom_boxplot)

ggplot(mtcars, aes(x=cyl, y=qsec, group=cyl)) +

geom_boxplot()