Estimation of the Correlation Coefficient for a Bivariate Normal Distribution with Missing Data
Keywords:
bivariate normal distribution, correlation coefficient, bias, missing data, mean square errorAbstract
This study proposes an estimator of the correlation coefficient for a bivariate normal distribution with missing data, via the complete observation analysis method. Evaluation of the proposed estimator (ˆρ J) in comparison with the Pearson correlation coefficient (ˆρP ) was conducted using a simulation study. It was found that, for a higher percentage of missing data in a large sample size, the absolute bias of ˆρ J was less than that of ˆρ P when the population correlation coefficients (ρ) were not close to zero. In addition, the mean square error of ˆρJ was not different from that of ˆρP in each situation.
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online 2452-316X print 2468-1458/Copyright © 2022. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/),
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