D08: Relationships – ANOVA

D08: Relationships – ANOVA

Start this discussion as soon as you’ve read the text/module info on the topic and wrapped up the last discussion. Try not to be working in two discussions at the same time – that’s a recipe for confusion!

Three posts are the minimum – one in response to my prompt below and at least two responses to the posts of other students. Use the discussion like a study group: Use your knowledge, practice, ask questions… Wrap up your discussion after participating for a few days -while you’re working on the worksheet and homework related to the topic – don’t wait too long since the quiz is coming. All discussion for this section close with the quiz.

I have completed a number of ANOVA tests using the following variables from the GSS – a national random sample done by a reputable research entity. Note: This is the 2012 data, not the same as what we’re using for the DAP! (For more info on the GSS, visit their website: gss.norc.orgLinks to an external site.

For your First Post:

Each of the discussions in this area has one main nominal (or ordinal) variable – and the output from a number of tests with different variables.

Choose only one of these nominal/ordinal variables: Class, Degree, Race, Health, Happiness, Life, Same-Sex Marriage. Open this file Download Open this fileand find the tests with the nominal/ordinal variable you chose. 

Choose ONE of the tests to discuss – choose one ANOVA test to interpret (your first post) and then discuss (with at least two other posts) those and other findings within that same discussion. 

In the file, there are two sets of output. The first box of output has the general statistics – the mean, N, and standard deviation. The second box has the test results…

Figure or find the df’s (dfbetween and dfwithin) and, using an alpha of 0.05, find the critical value of the test statistic (Use the correct table in the book – Critical Value of F for ANOVA).

Make a decision about the null hypothesis – accept or reject.

Interpret your findings – is there a relationship between these two variables? If so, what is the nature of that relationship? (Refer to the means or percents) Speculate on why these findings might be as they are. 

For your Response Posts (at least two):
Read through the posts of other students and comment or respond to at least two different posts.You can interpret their data findings in your own words, suggest a correction (gently and supportively), comment on what you learned from their post (be specific), discuss surprising or enlightening information in the data, etc..Your goal is to use the statistics we are learning and own the language – say it in your own words – so that anyone could understand what we are learning about the variables from the statistics.

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