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Live Lecture 2.1

Charts, Histograms, and Overlaid Histograms

Summer 2020

DATA 8

Spring 2020

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Announcements

  • Lab 3 due tonight (06/29) at 11:59pm PST
  • HW 3 due on Thursday (07/02) at 11:59pm PST

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Agenda

  1. Charts
  2. Overlaid Histograms
  3. Demo

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Charts

  • Visualizations are often the best way to communicate and explore patterns in data.
  • The choice of visualization depends on data type:
    • Numeric data: line graphs, scatter plots, and histograms
    • Categorical data: bar charts
  • Some visualizations can mix both data types

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Line Graphs

For visualizing the relationship between a numeric variable and a measure of time or distance:

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Scatter Plots

Used to visualize the relationship between two numeric variables:

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Histograms

Used to visualize the distributions of numeric variables:

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Bar Charts

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Visualize the distribution of categorical variables:

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Agenda

  • Charts
  • Overlaid Histograms
  • Demo

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Overlaid Histograms

How can we compare the distributions of a numeric variable from different populations?

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Overlaid Histograms

How can we compare the distributions of a numeric variable from different populations?

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Agenda

  • Charts
  • Overlaid Histograms
  • Demo

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Demo

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Q & A