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Research Paper | Statistics | Volume 15 Issue 6, June 2026 | Pages: 815 - 815 | India
D2 & D2* Values for Weibull Distribution
Abstract: The d2 and d2* values are tabulated for normal distribution. This article obtains d2 and d2* values for Weibull distribution. The scale (α) and the shape (β) parameters are calculated from which variance and hence standard deviation is calculated. Average range and variance are used to calculate the d2 and d2* values.
Keywords: Weibull distribution, Scale and Shape parameters, Newton Raphson's method, Gamma function, statistical process control, d2 and d2* values
How to Cite?: Abhijit Manohar, "D2 & D2* Values for Weibull Distribution", Volume 15 Issue 6, June 2026, International Journal of Science and Research (IJSR), Pages: 815-815, https://www.ijsr.net/getabstract.php?paperid=SR26615105729, DOI: https://dx.doi.org/10.21275/SR26615105729