Quartiles can be discovered by arranging a set of numbers from smallest to highest and then dividing the data into separate groups. Finding the quartiles of a data set is useful for discovering trends, such as the median... More »

The Interquartile Range Formula appears as "Q3 - Q1," where Q3 is the upper quartile and Q1 is the lower quartile of a data set. The interquartile range is also commonly referred to as the middle fifty or midspread. More »

IQR stands for "interquartile range," a measurement of the location of the bulk of values in a set of data. The formula for finding the interquartile range is to subtract the first quartile from the third quartile. More »

A stem and leaf plot with decimals is an organized representation of the frequency with which certain numbers containing decimals occur in a set of data. Stem and leaf plots can be applied in a number of different fields... More »

A bar graph is a way to visually represent a set of data. Bar graphs are particularly useful for data that is easy to categorize. The category is traditionally placed on the x-axis, and the values are put on the y-axis. More »

The box-and-whisker plot is a technique in statistics that graphically shows the distribution of a set of data involving the minimum and maximum values, as well as the first, second and third quartiles. The plot is typic... More »

Graphs of various types provide convenient visual representations of scientific data that would otherwise be presented in intimidating blocks of text or a series of numbers. Graphs represent statistics such as changes ov... More »