JOHN MANDEL National Bureau of Standards Washington, D. C. It frequently happens that data to be treated by regression methods or analysis of variance are subject to marked heterogeneity in the error variance. Weighting of the observations, in the least squares sense, is then appropriate but Read more
W. D. EWAN British Nylon Spinners Limited This paper reviews-and describes cumulative sum charts with special emphasis on the practical problems of successful application. Related PostsCumulative Sum ChartsE. S. PAGE University of Durham Computing Laboratory, Newcastle upon Tyne, England This Read more
M.B. WILK, R. GNANADESIKANAND M1ssM.J. HUYETT Bell Telephone Laboratories, Incorporated Murray Hill, New Jersey A procedure is presented for preparing probability plots for random samples from an assumed gamma distribution for any specified value of the shape parameter, 7. Computational Read more