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http://studyjams.scholastic.com/studyjams/jams/math/data-analysis/stem-leaf-plots.htm. What is a stem-and-leaf plot?. A stem and leaf plot is a quick way to organize large amounts of data. Creating a stem-and leaf plot. Step 1:.

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**http://studyjams.scholastic.com/studyjams/jams/math/data-analysis/stem-leaf-plots.htm**http://studyjams.scholastic.com/studyjams/jams/math/data-analysis/stem-leaf-plots.htm**What is a stem-and-leaf plot?**A stem and leaf plot is a quick way to organize large amounts of data.**Creating a stem-and leaf plot...**Step 1: The stem will be the digits in the tens place, in this case the numbers 6 to 10. Place them in order vertically from smallest to largest. Stem Leaf**Creating a stem-and leaf plot...**Step 2: Working from left to right in the data set, place the "leaves" (the digits in the ones place) in the corresponding rows. Stem Leaf**Creating a stem-and leaf plot...**Next, put the "leaves" in order from smallest to greatest. Step 3: Leaf Leaf Stem Stem**Creating a stem-and leaf plot...**Step 4: Finally, create a key or legend and a title. Test Scores Stem Leaf**Stem-and-Leaf Plot**Raffle tickets sold per student Stem Leaf 0 4 5 6 7 8 1 5 6 6 6 8 9 Key 2 3 3 7 5 1 = 51 0 2 4 Always include a key or legend. The 'leaf' holds the ones digit of the number The 'stem' holds the digits to the left of the 'leaf', usually the tens and hundreds digits.**Stem-and-leaf plot**Raffle tickets sold per student What was the least number of tickets sold? Stem Leaf 0 4 5 6 7 8 40 Key 5 1 = 51 1 5 What was the greatest number of tickets sold? 6 6 6 8 9 2 3 3 7 84 0 2 4 In which interval were most tickets sold? 60 - 69**Stem-and-leaf plot**How many students sold 66 tickets? Raffle tickets sold per student Raffle tickets sold per student 3 students Stem Leaf Stem Leaf How many students sold over 70 tickets? 0 4 5 6 7 8 0 4 5 6 7 8 Key Key 5 1 = 51 5 1 = 51 7 students 1 5 1 5 6 6 6 8 9 6 6 6 8 9 Altogether, how many students sold tickets? 2 3 3 7 2 3 3 7 0 2 4 0 2 4 15 How many tickets did they sell? 1,022 (40 + 51 + 55...)**Make a stem-and-leaf plot**12 33 34 21 34 10 15 35 22 Hours spent on homework per week Stem Leaf Leaf Stem 1 2 3 0 2 5 Key 1 2 __ __ = __ 3 4 4 5 3 3 3 4 3 4 3 5 1 0 1 5 2 1 2 2 1 2**Analyze the stem-and-leaf plot**Hours spent on homework per week Stem Leaf 1 2 3 0 2 5 Key 1 2 2 1 = 21 3 4 4 5 What was the least amount of time spent on homework? 10 hours How many students spent over 30 hours on homework? 4 What was the most time spent on homework? 35 On average what fraction of the day (24 hours) did this student spend doing their homework? 5/24**Find the mean, median and mode**Hours spent on homework per week Leaf Stem 10 12 15 21 22 33 34 34 35 216 1 2 3 0 2 5 Key 1 2 2 1 = 21 3 4 4 5 Stem Leaf 1 2 3 0 2 5 1 2 Mode 3 4 4 5 + Median Mode = 34 216 ÷ 9 = 24 Mean Leaf Stem Mean = 24 1 2 3 0 2 5 1 2 3 4 4 5 Median = 22**Stem and Leaf**Grade: «grade» «subject» Subject: «date» Date:**1**What was the greatest number of points earned? Numeric Points Earned by Volleyball Team**2**What was the least number of points earned? Numeric Points Earned by Volleyball Team**How many teams earned more than 50 points?**3 Numeric Points Earned by Volleyball Team**What was the difference between the greatest and least**number of points earned ? 4 Numeric Points Earned by Volleyball Teams**How many volleyball teams played in the tournament ?**5 Numeric Remember, each game has 2 scores! Points Earned by Volleyball Teams**http://studyjams.scholastic.com/studyjams/jams/math/data-analysis/line-plots.htm**http://studyjams.scholastic.com/studyjams/jams/math/data-analysis/line-plots.htm**Line Plots**Definition: A graph that shows how often something occurs by stacking X's above each data value on a number line. Features: 1) Counts how often something occurs. 2) Counts with vertical tallies or X's. 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5**1) TITLE**2) KEY**X's need to be the same height/width**Data: 3, 5, 5, 5, 5, 5, 6, 8, 8, 10, 10, 12, 12, 15

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