In statistics, the distribution describes the relative numbers of times each possible data value will occur in a data set. Statistical distributions help us understand a problem better by assigning a range of possible values to the variables.
- Normal Distribution (Bell Curve): A symmetrical, bell-shaped distribution where the mean, median, and mode are all equal. In a normal distribution, 68% of all values lie within one standard deviation from the mean. 95% of the values lie within two standard deviations from the mean, and 99.7% lie within three standard deviations from the mean.