studyjams.scholastic/studyjams/jams/math/data-analysis/stem-leaf-plots.htm

1. http://studyjams.scholastic.com/studyjams/jams/math/data-analysis/stem-leaf-plots.htmhttp://studyjams.scholastic.com/studyjams/jams/math/data-analysis/stem-leaf-plots.htm

2. What is a stem-and-leaf plot? A stem and leaf plot is a quick way to organize 
large amounts of data.

3. 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

4. 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

5. Creating a stem-and leaf plot... Next, put the "leaves" in order from smallest to greatest. Step 3: Leaf Leaf Stem Stem

6. Creating a stem-and leaf plot... Step 4: Finally, create a key or legend and a title. Test Scores Stem Leaf

7. 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.

8. 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

9. 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...)

10. 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

11. 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

12. 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

13. Stem and Leaf Grade: «grade» «subject» Subject: «date» Date:

14. 1 What was the greatest 
number of points earned? Numeric Points Earned by Volleyball Team

15. 2 What was the least number 
of points earned? Numeric Points Earned by Volleyball Team

16. How many teams earned 
more than 50 points? 3 Numeric Points Earned by Volleyball Team

17. What was the difference 
between the greatest and least 
number of points earned ? 4 Numeric Points Earned by Volleyball Teams

18. How many volleyball teams 
played in the tournament ? 5 Numeric Remember, each game has 2 scores! Points Earned by Volleyball Teams

19. http://studyjams.scholastic.com/studyjams/jams/math/data-analysis/line-plots.htmhttp://studyjams.scholastic.com/studyjams/jams/math/data-analysis/line-plots.htm

20. 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

21. Create your own line plot

22. Money Earned Mowing Lawns

23. 1) TITLE 2) KEY

24. X's need to be the same height/width Data: 3, 5, 5, 5, 5, 5, 6, 8, 8, 10, 10, 12, 12, 15