Question: The article Approximate Methods for Estimating Hysteretic Energy Demand on Plan-Asymmetric Buildings (M. Rathhore, A. Chowdhury, and S. Ghosh, Journal of Earthquake Engineering, 2011:99123) presents

The article “Approximate Methods for Estimating Hysteretic Energy Demand on Plan-Asymmetric Buildings” (M. Rathhore, A. Chowdhury, and S. Ghosh, Journal of Earthquake Engineering, 2011:99–123) presents a method, based on a modal pushover analysis, of estimating the hysteretic energy demand placed on a structure by an earthquake. A sample of 18 measurements had a mean error of 457.8 kNm with a standard deviation of 317.7 kNm. An engineer claims that the method is unbiased, in other words, that the mean error is 0. Can you conclude that this claim is false?

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