A line chart or line graph is a type of chart which displays information as a series of data points called 'markers' connected by straight linesegments
Data Analysis
15.a Collect, organize, and interpret a set of numerical data
Line Graph
Line Plot

A line plot is a graph that shows frequency of data along a number line. It is best to use a line plot when comparing fewer than 25 numbers. It is a quick, simple way to organize data.
Stem and Leaf

A plot where each data value is split into a "leaf" (usually the last digit) and a "stem" (the other digits). For example "32" is split into "3" (stem) and "2" (leaf). The "stem" values are listed down, and the "leaf" values are listed next to them.