MGT5028 Statistics Activity 9
Saturday, March 28th, 2009Activity 9 includes a one sample t-test, an independent samples t-test, and a one-way ANOVA. This assignment builds on Activity 7 (t-tests) and Activity 8 (one-way ANOVA). I did well on both of these so I am hopeful that #9 will follow along. I did have issues with #7 as I found it was the most difficult of all the assignments to date. I am finally getting the hang of reading SPSS output, which is very different from what the old Minitab output looked like during my MBA days. That course also forced us to do many of the calculations ourselves. I am finding that just plunking the numbers in SPSS does not help me understand the concepts, which is necessary because the assignments require this analysis.
The textbook, Norušis’ SPSS 16.0 Guide to Data Analysis (2009), is not particularly helpful but it does have examples. If you can follow the examples you can infer how to complete the assignments at the end of the chapters. However, some of the questions are asked in such a way that I have to read them several times to “get” what I am looking to answer. Each chapter has a few answers in the back of the book but these are pretty basic answers. It’s not like every odd answer is in the back like some texts.
MGT5028 has 12 assignments so I suppose I am 75% complete, having finished 8 assignments. I turned in #8 yesterday and am starting on #9 today. In addition to the Norušis text, I have a several others plus a bunch of website favorite links. A course like statistics is pretty tough to learn through independent study, which is pretty much what I am doing. I keep telling myself this is my last core course before the research phase of my coursework. I am pretty pumped about that!
Here’s part of Activity 9 so that you can get an idea of the assignment:
One sample t-test
Use renal.sav and do the following: Using “length of stay” as the test variable, conduct a hypothesis test on whether the average length of stay is 14 days. State the hypothesis to be tested. State the reject/not reject decision and conclusion. You should state the variables you are analyzing, display the SPSS output, and add a brief analysis of the output. The analysis should be a brief write up of what you conclude from the output and any insights you might have.
Sounds pretty straightfoward so I hope to finish this activity this weekend. With plenty of coffee and ibuprofen, I should be able to make that happen!