Week 1 Quiz

Week 1 Quiz >> Exploratory Data Analysis

1 point

Make judicious use of color in your scatterplots

Show multivariate data

Show box plots (univariate summaries)

Only do what your tools allow you to do

Don’t plot more than two variables at at time

1 point

They are used in place of formal modeling.

The goal is for personal understanding.

Axes, legends, and other details are clean and exactly detailed.

Only a few are constructed.

1 point

Plots are created and annotated with separate functions

Plots are typically created with a single function call

Margins and spacings are adjusted automatically depending on the type of plot and the data

The system is most useful for conditioning plots

1 point

Plots that are not scaled to a specific resolution

Plots that require animation or interactivity

Scatterplots with many many points

Plots that may need to be resized

1 point

boxplot()

hist()

plot()

points()

1 point

pdf()

bitmap()

png()

quartz()

1 point

the orientation of the axis labels on the plot

the plotting symbol/character in the base graphics system

the size of the plotting symbol in a scatterplot

the line width in the base graphics system

1 point

Construct the plot on the screen device and then copy it to a PDF file with dev.copy2pdf()

Open the PostScript device with postscript(), construct the plot, then close the device with dev.off().

Construct the plot on the PNG device with png(), then copy it to a PDF with dev.copy2pdf().

Open the screen device with quartz(), construct the plot, and then close the device with dev.off().

Week 1 Quiz >> Exploratory Data Analysis