Examlex
If an overload relay that is a thermal type has tripped several times, what is the likely cause of the problem?
V(X + Y)
The variance of the sum of two random variables, considering both their individual variances and covariance.
V(X)
The variance of a random variable X, representing the expectation of the squared deviation of X from its mean.
V(Y)
The notation for the variance of a random variable Y, measuring the spread of its values.
Joint Probability
The probability of two events occurring together or at the same point in time.
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