normal distribution

A normal distribution would resemble a bell curve with a peak around three and a rapidly tapering tail in both directions, meaning the probability of an extreme event declines exponentially as the number of infections moves farther from the average.
Slowing the spread|Katie McLean|December 18, 2020|MIT Technology Review
Something like fluoride, which is too small for normal filters, yanks away that feeling of agency.
Anti-Fluoriders Are The OG Anti-Vaxxers|Michael Schulson|July 27, 2016|DAILY BEAST
Carlisle writes that the Air Force would want a crew ratio of 10 to one for each drone orbit during normal everyday operations.
Exclusive: U.S. Drone Fleet at ‘Breaking Point,’ Air Force Says|Dave Majumdar|January 5, 2015|DAILY BEAST
He appears only normal, even in video footage from just two minutes before the shooting.
Exclusive: Inside a Cop-Killer’s Final Hours|Michael Daly|December 31, 2014|DAILY BEAST

The flight path remained close to the Indonesian archipelago, well within what is the normal reach of air traffic control radar.
Did Bad Weather Bring Down AirAsia 8501?|Clive Irving|December 29, 2014|DAILY BEAST
Six months of sterility results, after which normal fertility returns.
Men, Ice Your Balls To Make Babies—and Other Male Fertility Fixes|Tom Sykes|December 22, 2014|DAILY BEAST
In the early stages of chronic nephritis, when diagnosis is difficult, it is usually normal.
A Manual of Clinical Diagnosis|James Campbell Todd
Walls End Castle, when the party broke up, returned to its normal state.
The Pit Town Coronet, Volume I (of 3)|Charles James Wills
No trait is better marked in the normal child than the impulse to subject others to his own disciplinary system.
Children's Ways|James Sully
It is often present in the respiratory tract under normal conditions.
A Manual of Clinical Diagnosis|James Campbell Todd
Then, inexplicably, he shifted to the other side that the old, the normal Tom presented generously to the new.
The Wave|Algernon Blackwood

British Dictionary definitions for normal distribution

normal distribution

noun

statistics a continuous distribution of a random variable with its mean, median, and mode equal, the probability density function of which is given by (exp- [(x –μ)²/2σ²]/σ√(2π)) where μ is the mean and σ² the varianceAlso called: Gaussian distribution

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for normal distribution

normal distribution

[ nôr′məl ]

A theoretical frequency distribution for a set of variable data, usually represented by a bell-shaped curve symmetrical about the mean.