Lecture_2_intro

This plot is

• One dimension plot

• Two dimension ploti

• Three dimension plot

Box plot is used when there are two numerical variables

• True

• False

Which code gives this plot

• ggplot(iris,aes

  (x=Sepal.Length,

  y=Sepal.Width,

  alpha=Petal.Length ))+

  geom_point(color="blue")

• ggplot(iris,aes

  (x=Sepal.Length,

  y=Sepal.Width))+

  geom_point(color="blue", alpha=0.6)

Which part of the code responsible on the dispersion of the points?
ggplot(df, aes(x = Species, y = Sepal.Length)) +

geom_point(position = position_jitter(width = 0.2))

• aes()

• geom_point()

• ggplot()

• position_jitter()

The following stacked bar chart represents:

• Two numerical variables

• Two categorical variables

• One categorical variable and One numerical variable

• Only One numerical variable

ggplot2 layer which considered All non-data ink

or a Visual elements not part of the data

• Geometric layer

• Theme layer

• Data layer

• Aesthetic layer

For the following code which part is responsible for The thickness of the outline of the large black points?
ggplot(iris, aes(x=Sepal.Length,y=Sepal.Width , color=Species) )+

geom_point(position="jitter")+

geom_point(data=iris.summary, shape=22, size=5, fill="black", stroke=2)

• fill="black"

• color=Species

• position="jitter"

• stroke=2

Which of the following shapes we can add new color inside it and new to the outward edge

• Shapes 0:6

• shapes 15:20

• shapes 21:25

• All of them