Department of Statistics, University of Wah has organized a webinartitled “Unified Approach to Optimal Estimation of Mean and Standard Deviationfrom Sample Summaries” on 01 August, 2022. Prof. Jan Rychtar fromthe Department of Mathematics, Virginia Commonwealth University, USA was theGuest Speaker. The Guest Speaker discussed one of his recent research articlesas a reference to show how various methods could be developed to estimate thesample mean and standard deviation when only the sample size and other selectedsample summaries are reported. He highlighted that the proposedestimators have the lowest variance among linear unbiased estimators. Graphicalrepresentation was also illuminated for better understanding. Finally, hedemonstrated the performance of the estimators numerically for Covid-19 data.More than 35 participants including students, faculty members and researchersattended the webinar. The webinar ended with an interactive QA session.