# Stem-and-Leaf Plots --- ## Stem-and-Leaf Plot ### Example 1 **Original Data:** 13,21,15,11,12,23,22,26,13,22,24,31,33,44 Leaf = Ones  --- ## Stem-and-Leaf Plot ### Example 2 **Original Data:** 0.2, 0.3, 2.1, 1.3, 1.4, 1.5, 0.2, 0.2, 0.2, 2.3, 0.4, 1.8  --- ## Stem-and-Leaf Plot ### Example 3 **Original Data:** 82, 111, 214, 112, 132, 115, 125, 133, 142, 147, 183 <img src="https://i.imgur.com/1o1kcv0.png" alt="drawing" width="200"/> --- ## Stem-and-Leaf Plots * Useful with relatively small data sets * Works best with simpler numbers (2-3 digits) that are not too spread out * Can help see patterns and outliers --- ## Example The following data gives the ages of people at a recent family reunion: 5,6,8,11,12,15,33,33,40,43,70,71 Make a stem-and-leaf plot and comment on the distribution. <img src="https://i.imgur.com/EcNKZa3.png" alt="drawing" width="200"/> --- <img src="https://i.imgur.com/EcNKZa3.png" alt="drawing" width="450"/> --- ## Choices * How to separate entries: commas, spaces, none? * What to make the leaves? * Whether to split long stems halfway? --- ## Example A small grocery store chain tracks how many packages of hot dogs were sold during the month of July.These were the sales: 490, 571, 580, 556, 234, 311, 335, 245, 236, 220, 261, 248, 233, 256, 212, 211, 233, 241, 267, 255, 202, 224, 223, 211, 245, 253, 261, 280, 252, 230, 234 Make a stem-and-leaf plot for this data. --- **Version 1** <img src="https://i.imgur.com/S7k2Cpe.png" alt="drawing" width="400"/> --- **Version 2**  --- **Version 3**  ---