Hi everyone! Read through the material below, watch the videos, work on the Excel lecture and follow up with me if you have questions.

Learning Outcomes.

• Determine if the data supports a hypothesis at a given significance level using known distributions.

Topic. This lesson covers: Chi-Squared Goodness of Fit Test

Ā

• Introductory Statistics by Sheldon Ross, 3rd edition: Section 13.2
• Statistics with Microsoft Excel by Beverly J. Dretzke, 5th ed., CHIDIST(x,df), CHIINV(p,df) P. 249 – 255

WeBWorK Set 11.2

Videos

The Applied View

This video is not on goodness of fit. Instead it should serve as preparation for the next lesson. Watch Two-Way Tables.

1. Give two (or more) examples of categorical variables.
2. What did Somerville include in its 2011 census that was unconventional?
3. In the two-way table used to organize the responses to rating personal happiness and Somervilleās physical beauty, which variable was the row variable and which was the column variable? Explain.
4. As the level of happiness went up (from Unhappy to So-so to Happy), what happened to the percent of respondents who rated Somervilleās physical beauty as Bad?