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
- Openstax Introductory Statistics
- 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 – due 12/15 at 4 pm
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.
- Give two (or more) examples of categorical variables.
- What did Somerville include in its 2011 census that was unconventional?
- In the two-way table used to organize the responses to rating personal happiness and Somerville’s physical beauty, which variable was the row variable and which was the column variable? Explain.
- As the level of happiness went up (from Unhappy to So-so to Happy), what happened to the percent of respondents who rated Somerville’s physical beauty as Bad?
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