Normal distribution (aka gaussian probability distribution, The normal distribution is used to analyze data when there is an equally likely chance of being above or below the mean for continuous data whose histogram fits a. The normal distribution - departments & programs, Random; 4. special distributions; the normal distribution; the normal distribution. the normal distribution holds an honored role in probability and statistics. Normal distributions : definition, word problems, Normal distribution definition, articles, word problems. hundreds of statistics videos, articles. free help forum. online calculators..