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Abstract Studying the record values to find the estimates of the location and scale parameters of the extreme lower bound distribution and we calculated the maximum likelihood estimation (MLE0s), the best linear unbiased estimation (BLUE0s) and the best linear invariant estimation (BLIE0s). Finally, we compare our estimates for the location and scale parameters with the corresponding MLE0s, BLUE0s and BLIE0s. The thesis consists of four chapters as follows: In chapter one: The objective of this research is to present some basic definitions of order statistics record values including the standard record values, the probability density function of record values, moments, the maximum likelihood estimation of the upper and lower record values, BLUE0s of location and scale parameters and the best linear invariant estimation (BLIE0s). In chapter two: We present the recurrence relations of single and double moments of record values, calculated the BLUE0s and MLE0s of Type I and type III extreme value which are Gumbel and Weibull distributions respectively of the record values. In chapter three: We obtain the pdf, expected value, variance and covariance of the Type(II) which is extreme lower bound distribution and we obtained the BLUE0s, BLIE0s of the extreme lower bound distribution of the record values. 4 CONTENTS 5 In chapter four: We obtain the maximum likelihood estimation of the extreme lower bound distribution which described in chapter 3, finally compare of the three methods BLUE0s,BLIE0s and MLE0s of the extreme lower bound distribution of the record values. |