Exploratory analysis

Data visualization, part 1. Code for Quiz 7

1.Load the R package we will use.


Question: Modify slide 34

-Create a plot with the faithful dataset -add points with geom_point -assign the variable eruptions to the x-axis -assign the variable waiting to the y-axis -colour the points according to whether waiting is smaller or greater than 76


Question: modify intro-slide 35


Question: modify intro-slide 36

-Create a plot with the faithful data set -use geom_histogram() to plot the distribution of waiting time -assign the variable waiting to the x-axis


Question: modify geom-ex-1

-See how shapes and sizes of points can be specified here

-Create a plot with the faithful dataset

-add points with geom_point

-assign the variable eruptions to the x-axis -assign the variable waiting to the y-axis -set the shape of the points to SEE QUIZ -set the point size to SEE QUIZ -set the point transparency SEE QUIZ


Question: modify geom-ex-2

-Create a plot with the faithful dataset -use geom_histogram() to plot the distribution of the eruptions (time) -fill in the histogram based on whether eruptions are greater than or less than 3.2 minutes


Question: modify stat-slide-40

-Create a plot with the mpg dataset -add geom_bar() to create a bar chart of the variable manufacturer


Question: modify stat-slide-41

-change code to count and to plot the variable manufacturer instead of class


Question: modify stat-slide-43

-change code to plot bar chart of each manufacturer as a percent of total -change class to manufacturer


Question: modify answer to stat-ex-2

-For reference see examples.

-Use stat_summary() to add a dot SEE QUIZ at the median of each group

-color the dot SEE QUIZ

-make the shape of the dot SEE QUIZ

-make the dot size SEE QUIZ