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A stem-and-leaf plot is a method of displaying quantitative data in a graphical format, similar to a histogram. Each data point is split into a 'stem' (the leading digit or digits) and a 'leaf' (the trailing digit). This allows for easy visualization of the distribution of the data while retaining the original values, making it useful for identifying the shape of the data set.

A dot plot is a simple graphical display that uses dots to represent individual data points along a number line. Each dot corresponds to a single observation, making it easy to see the frequency of values and identify clusters or gaps in the data. Dot plots are particularly useful for small data sets and provide a clear visual representation of the distribution.

The maximum and minimum data entries refer to the highest and lowest values in a data set, respectively. Identifying these values is crucial for understanding the range of the data, which can provide insights into its spread and variability. In graphical representations like dot plots, the maximum is found at the rightmost point, while the minimum is at the leftmost point.