242 LINEAR REGRESSION AND CORRELATION Ch. 7 



69. Compute the Spearman coefficient of linear correlation for each scatter 

 diagram of problem 66 and then solve problem 67 in the light of these results. 



70. Make a scatter diagram for the freshmen and for the juniors, as in prob- 

 lem 64, but use the ACE-Q scores. Draw all appropriate conclusions. 



REFERENCES 



Arley, Niels, and K. Rander Buch, Introduction to the Theory of Probability 



and Statistics, John Wiley and Sons, New York, 1950. 

 Dixon, Wilfrid J., and Frank J. Massey, Jr., Introduction to Statistical Analysis, 



McGraw-Hill Book Company, New York, 1952. 

 Freund, John E., Modern Elementary Statistics, Prentice-Hall, New York, 1952. 

 Hald, A., Statistical Theory with Engineering Applications, John Wiley and 



Sons, New York, 1952. 

 Snedecor, George W., Statistical Methods Applied to Experiments in Agriculture 



and Biology, Fourth Edition, Iowa State College Press, Ames, Iowa, 1946. 



