Researchers went through 17 studies that examined the penis size of more than 15,000 men. They found that the average flaccid penis lengthâfrom the base to the opening on the tipâwas 3.6 inches and the circumference, measured around the base or mid-shaft, was 3.7 inches.
Reverberation artifact is a common ultrasound artifact and occurs when a sound pulse reverberates back and forth between two strong parallel reflectors.With the exception of comet-tail artifact, a subtype of reverberation, reverberation artefact has little diagnostic use.: Reverberation artifact occurs when an ultrasound pulse gets trapped between two strong parallel reflectors.
Reversion to the Mean. Reversion to the mean, also called regression to the mean, is the statistical phenomenon stating that the greater the deviation of a random variate from its mean, the greater the probability that the next measured variate will deviate less far. In other words, an extreme event is likely to be followed by a less extreme event.