A table in which data values are divided into either a "leaf" or a "stem." In a stem and leaf plot, the stem values appear on the vertical axis and the leaf values are listed on the horizontal axis.
Characterized by simple geometric forms in design and decoration
A statistical rule stating that for a normal distribution, almost all data will fall within three standard deviations of the mean.
The level of certainty that the true score falls within a specific range. The smaller the range the less the certainty.