such as a score of 100 or 0, would be considered long-tail data points that consequently lie squarely outside of the three-standard-deviation range. Bell Curve vs. Non-Normal Distributions The ...

The bell curve, or normal distribution, occurs throughout statistics. Like snowflakes, there are an infinite number of normal distributions. It is determined by the mean and standard deviation of ...

Standard deviation is a concept that's thrown ... The shape of a normal distribution is a bell-shaped curve, like the one in the image. That curve shows, roughly speaking, how likely it is that ...

A pupil's PSLE score will be the sum of the ALs of the ... "There is a common misconception among parents that there is a standard bell curve that students' performance fall into.