29 2 9 When we read stem and leaf charts it is important to use the key, which informs us how we should interpret the number. For example, if the key says 3 | 1 = 3.1 we know that the last digit should be in the tenths place. Try using the keys provided in the table below to interpret the raw data. Key Stem Leaf Raw Data 113 = 13 23 1 231 17 | 4 = 1.74 9 5 9.5 519 = 5.9 3 6 36 Now let's look at a stem and leaf graph. Title 0 12379 1 455566 2 557888 566 UID W 0 Key: 3 | 1 means 31