AP PSYCHOLOGY

Detailed explanation-1: -The normal distribution is a symmetric, bell shaped curve that represents the pattern in which many characteristics are dispersed in the population. Refers to sub average general mental ability accompanied by deficiencies in adaptive skills, originating before age 18.

Detailed explanation-2: -The normal distribution is often called the bell curve because the graph of its probability density looks like a bell. It is also known as called Gaussian distribution, after the German mathematician Carl Gauss who first described it.

Detailed explanation-3: -A normal distribution curve, when graphed out, typically follows a bell-shaped curve, hence the name. While the precise shape can vary according to the distribution of the population, the peak is always in the middle and the curve is always symmetrical.

Detailed explanation-4: -The Bell-shaped Curve is commonly called the normal curve and is mathematically referred to as the Gaussian probability distribution. Unlike Bernoulli trials which are based on discrete counts, the normal distribution is used to determine the probability of a continuous random variable.

Detailed explanation-5: -Answer and Explanation: The symmetric bell shape of the normal curve implies that the skewness of the distribution of the data is 0, and most of the observation is located at the middle of the distribution.