В Fri, 4 Oct 2024 20:28:01 +0800 Steven Yen <st...@ntu.edu.tw> пишет:
> Suppose I have two vectors, x and y. Is there a way > to do the covariance matrix with “apply”. There is no covariance matrix for just two samples (vectors) 'x' and 'y'. You can only get one covariance value for these. If you had a pair of vectors of _random variates_, the situation would be different, but those are more abstract mathematical concepts. You would need to sample every random variate, producing two matrices 'x' and 'y' in order to calculate a covariance matrix for them. -- Best regards, Ivan ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide https://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
