If for example I have two random variables X and Y. X stands for height and Y for weight. I compute the conditional variance for Y at each X. ( Both are discrete). Then can I compute the total variance by summing each weighted conditional variance where weights would be number of cases the measurements have been taken and then dividing the total amount of measurements taken?
2026-03-26 12:51:39.1774529499
Variance for grouped bivariate data.
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Use this. Your calculation would only be the first term.