Statistics for Environmental Engineers

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Maddelone, R. F., J. K. Rice, B. C. Edmondson, B. R. Nott, and J. W. Scott (1993). “Defining Detection and Quantitation Levels,” Water Env. & Tech., Jan., 41-44.


Mandel, J. (1964). The Statistical Analysis of Experimental Data, New York, Interscience Publishers.


Miller, J. C. and J. N. Miller (1984). Statistics for Analytical Chemistry, Chichester, England, Ellis Horwood Ltd.


Woodside, G. and D. Kocurek (1997). Environmental, Safety, and Health Engineering, New York, John Wiley.


Youden, W. J. (1972). Statistical Techniques for Collaborative Tests, Washington, D.C., Association of Official Analytical Chemists.


Youden, W. J. and E. H. Steiner (1975). Statistical Manual of the Association of Official Analytical Chemists, Arlington, VA, Association of Official Analytical Chemists.

Exercises


9.1 Student Accuracy. Four students (A-D) each performs an analysis in which exactly 10.00 mL of exactly 0.1M sodium hydroxide is titrated with exactly 0.1M hydrochloric acid. Each student performs five replicate titrations, with the results shown in the table below. Comment on the accuracy, bias, and precision of each student.


Student A


Student B


Student C


Student D


10.08


9.88


10.19


10.04


10.11


10.14


9.79


9.98


10.09


10.02


9.69


10.02


10.10


9.80


10.05


9.97


10.12


10.21


9.78


10.04


Platinum Auto Catalyst. The data below are measurements of platinum auto catalyst in standard reference materials. The known reference concentrations were low = 690 and high = 1130.

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