Examlex
Talkwalker and Twubs are examples of ____ search engines and tools.
Probability Distribution
A function in mathematics that determines the probability of each possible outcome in an experimental scenario.
Random Variable
A variable whose possible values are outcomes of a random phenomenon.
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.
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