7.2 Visualizing the World: An Introduction to Visualization

7.2 Visualizing the World: An Introduction to Visualization

Quick Question

In this quick question, we’ll be asking you questions about the following three plots, that we saw in Video 1. We’ll refer to them as the “Scatterplot”, the “Histogram”, and the “US Map”.

The Scatterplot:

Scatterplot showing the miles per gallon of a car as a function of the car's weight.

The Histogram:

Histograms of different categories using Hubway data.

The US Map:

U.S. state map indicating unemployment by state by varying shades of red.

In the Scatterplot, what are the geometric objects?

 Bars  close
 Points  check
 Lines  close
 Polygons  close
 Boxes  close
Check Show Solution

Explanation The geometric objects for the Scatterplot are points, for the Histogram are bars, and for the US Map are polygons (the States). All three plots defined colors in the plot.

In the Histogram, what are the geometric objects?

 Bars  check
 Points  close
 Lines  close
 Polygons  close
 Boxes  close
Check Show Solution

Explanation The geometric objects for the Scatterplot are points, for the Histogram are bars, and for the US Map are polygons (the States). All three plots defined colors in the plot.

In the US Map, what are the geometric objects?

 Bars  close
 Points  close
 Lines  close
 Polygons  check
 Boxes  close
Check Show Solution

Explanation The geometric objects for the Scatterplot are points, for the Histogram are bars, and for the US Map are polygons (the States). All three plots defined colors in the plot.

All three of these plots defined a particular aesthetic property. What is it?

 The x-axis label.  close
 The y-axis label.  close
 Different shapes for different types of observations.  close
 Colors.  check
 A legend.  close
Check Show Solution

Explanation The geometric objects for the Scatterplot are points, for the Histogram are bars, and for the US Map are polygons (the States). All three plots defined colors in the plot.

Course Info

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