Cancer Study:  One-way Analysis of Variance (ANOVA)

From the Data and Story Library, Cornell University (http://lib.stat.cmu.edu/DASL/)

Reference: Cameron, E. and Pauling, L. (1978) Supplemental ascorbate in the supportive treatment of cancer: re-evaluation of prolongation of survival times in terminal human cancer. Proceedings of the National Academy of Science USA, 75, 4538Ð4542. Also found in: Manly, B.F.J. (1986) Multivariate Statistical Methods: A Primer, New York: Chapman & Hall, 11. Also found in: Hand, D.J., et al. (1994) A Handbook of Small Data Sets, London: Chapman & Hall, 255.

Authorization: Contact authors
Description: Patients with advanced cancers of the stomach, bronchus, colon, ovary or breast were treated with ascorbate. The purpose of the study was to determine if the survival times differ with respect to the organ affected by the cancer.
Number of cases: 64
Variable Names:
Download the SPSS dataset:  Cancer.sav

Questions

   1.Conduct a one-way ANOVA that compares the mean survival rates for each organ affected by cancer.
     a.    Write a null hypothesis.
     b.    Report and interpret your results - be specific.

Hot Dog Study:  One-way ANOVA

From the Data and Story Library, Cornell University (http://lib.stat.cmu.edu/DASL/)

Reference: Moore, David S., and George P. McCabe (1989). Introduction to the Practice of Statistics. Original source: Consumer Reports, June 1986, pp. 366-367.

Description: Results of a laboratory analysis of calories and sodium content of major hot dog brands. Researchers for Consumer Reports analyzed three types of hot dog: beef, poultry, and meat (mostly pork and beef, but up to 15% poultry meat).
Number of cases: 54
Variable Names:
  1. Type: Type of hotdog (beef, meat, or poultry)
  2. Calories: Calories per hot dog
  3. Sodium: Milligrams of sodium per hot dog
Download:  Hotdog.sav

Questions

1.    Conduct a one-way ANOVA that compares the mean calorie levels for the types of hotdogs.

             a.    Write a null hypothesis.
             b.    Report and interpret your results - be specific.

2.    Conduct a one-way ANOVA that compares the mean sodium levels for the types of hotdogs.

             a.    Write a null hypothesis.
             b.    Report and interpret your results - be specific.
 

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