what is the function of trace function a what is the expected variance on a function tracing what is the expected value of trace function what is variance in a trace function what is expected value of random variable what is the expected value in a trace function variance of random variable and expected value what is the value and variance of trace function what variable will have expected value and variance what is the expected value of a trace function trac function variances expected value and variance of trace function for random variable expected value and variance in math average variance xml what is the variance of the trace function tr function for variable variance which is true of the expected value of the trace function what is the expected value, variance, and the variance of the trace function what is the function for expected variance what is the expected value of trace function