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D:\98943912.doc Page 1 of 1 ASSIGNMENT #6 - SPSS FOR WINDOWS t-TEST ASSIGNMENT CEP640 - MADDUX Suppose two classes take a test after class A receives a new treatment, and class B receives a traditional one. Here are the scores: A 26 24 18 17 18 20 18 B 38 26 24 24 30 22 1. Create an SPSS for WINDOWS datafile. 2. Save it on your diskette calling it spsst1.sav. 3. Use SPSS for WINDOWS to compare the means of the scores of these two groups with a t test. 4. Save the output file on your diskette calling it spsst1.spo 5. Print out both spsst1.sav and spsst1.spo 6. Put your name at the top of the first page and print the following in large letters under your name: ASSIGNMENT #6 - spsswinhomeworkt.doc 7. Staple a separate sheet to the BACK of the packet on which you answer the following questions. (Be sure to repeat each question on your answer sheet). Answer the following questions: 1. 2. 3. 4. 5. 6. 7. 8. 9. Are there equal sample sizes? Is the data independent? Do you have homogeneity of variance? How do you know? What are the two means? What is the t for this data? How many degrees of freedom are there for the proper analysis? What is the p? Are the two means significantly different? If so, which teaching technique was best? NOTE: I am adding a little to this assignment!!! I want you to make up two more research scenarios, complete with data. Make the numbers of scores in each group equal. Run an independent samples t-test on each of these data sets and answer all the same questions you answered above for each.