Spreadsheet: Excel, on-line at Google

Example of data visualization: a 20-minute video

Two versions of Standard Deviation: divided by n-1 and n, respectively. We use the former version by default

Applet for one-variable statistics

Use your calculator or the calculator in Microsoft Windows to compute mean and standard deviation (see a webpage recommended by Ryan Piveteau)

Video clip: Normal Distributions

Applet: Normal Density Curve

**Homework**: Chapter 5 Exercises No. 5, 14, 21, 33, 45.