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EDRM611: Applied Statistics

Homework for Statistics Lesson 13

Answer Completely.

Some calculations are required.

Due Wed., Aug. 3, 2005, 10:30:00.000, EDT.

Due on the teacher's desk in BH114.

1. (2 points) Compare and contrast the usage of the Tetrachoric and Spearman rho correlation coefficients.

    

    

    

    

    

    

    

    

2. (4 points) Several correlation coefficients are special cases of the Pearson product moment correlation coefficient. Which ones and what situation do they apply to?

    

    

    

    

    

    

    

    

3. (2 points) Calculate Phi for the contingency table below. Be sure to show your work.

   Class.\Gender	Female (0)	Male (1)	Totals
   Untenured	20	5	25
   Tenured	5	20	25
   Totals:	25	25	50

    

    

    

    

    

    

    

4. (2 points) Discuss how eta differs from r.

    

    

    

    

    

    

    

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