  We analyze the performance of quantum teleportation in terms of average
fidelity and fidelity deviation. The average fidelity is defined as the average
value of the fidelities over all possible input states and the fidelity
deviation is their standard deviation, which is referred to as a concept of
fluctuation or universality. In the analysis, we find the condition to optimize
both measures under a noisy quantum channel---we here consider the so-called
Werner channel. To characterize our results, we introduce a two-dimensional
space defined by the aforementioned measures, in which the performance of the
teleportation is represented as a point with the channel noise parameter.
Through further analysis, we specify some regions drawn for different channel
conditions, establishing the connection to the dissimilar contributions of the
entanglement to the teleportation and the Bell inequality violation.
