# Class 16: Topic 13: Sampling Distributions: Proportions

Back to Topic 12: Normal Distributions. On to Pause for Breath.

This outline is also available in PDF.

Held: Wednesday, 27 February 2008

Summary: We consider how the normal distribution can help you use samples to draw preliminary conclusions about populations.

Notes:

• Due Friday: Activities 13-7, 13-9, 13-13, 13-18. Also read the overview and do the preliminaries for the next topic.
• We'll spend a few minutes talking about recent events on campus.
• The math starts getting more serious about now. Let me know when you need help interpreting it.
• I've had a request to go over 12-17, and so we will.
• Preparation: Overview and Preliminaries for Topic 13.
• Handouts: Applet: Reeses Pieces.
• Due: Activities 12-5, 12-9, 12-17, 12-18.

Overview:

• The normal distribution, revisited.
• Normal probability plots.
• How the normal distributions help you think about samples (and vice versa).

Back to Topic 12: Normal Distributions. On to Pause for Breath.

Disclaimer: I usually create these pages on the fly, which means that I rarely proofread them and they may contain bad grammar and incorrect details. It also means that I tend to update them regularly (see the history for more details). Feel free to contact me with any suggestions for changes.

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Samuel A. Rebelsky, rebelsky@grinnell.edu

Copyright © 2008 Samuel A. Rebelsky. This work is licensed under a Creative Commons Attribution-NonCommercial 2.5 License. To view a copy of this license, visit `http://creativecommons.org/licenses/by-nc/2.5/` or send a letter to Creative Commons, 543 Howard Street, 5th Floor, San Francisco, California, 94105, USA.