![]() ![]() 5 6 8 9 6 1 4 7 7 7 7 3 5 6 8 8 0 5 7 8 9 2 6 10 0 0 This stem-and-leaf plot shows points that students received on a science quiz.įinding the Mean (the average) We will start by adding a zero to the end of the stem and then multiplying that number times the number of leaves you have. 5 6 8 9 6 1 4 7 7 7 7 3 5 6 8 8 0 5 7 8 9 2 6 10 0 0 This stem-and-leaf plot shows points that students received on a science quiz.įinding the Mean (the average) 73 75 76 78 40 49 49 56 58 59 61 64 67 67 67 80 85 87 88 92 96 100 100 4 0 9 9 To find the mean, you will be doing a combination of Multiplying, adding, and dividing. After looking at all your rows, pick the underlined number that has the most digits. ![]() If you see more than one of a number, underline it. 5 6 8 9 6 1 4 7 7 7 7 3 5 6 8 8 0 5 7 8 9 2 6 10 0 0 This stem-and-leaf plot shows points that students received on a science quiz.įinding the Mode (the number that shows up most) You have more 7s than 9s or 0s. 23 ÷ 2 = 11.50 the 12th number will be our median. This means that the 12th number is my median. ![]() If I divided that in half, I would end up with 11.5. 5 6 8 9 6 1 4 7 7 7 7 3 5 6 8 100 is the largest number 8 0 5 7 8 9 2 6 10 0 0 This stem-and-leaf plot shows points that students received on a science quiz.įinding the Median (the middle number) Start counting with this leaf! 73 75 76 78 40 49 49 56 58 59 61 64 67 67 67 80 85 87 88 92 96 100 100 Leaf number 12… This is the halfway point! 4 0 9 9 I have 23 leaves. This stem-and-leaf plot shows points that students received on a science quiz. No! This chart shows the number of infant deaths per 1,000 live births, of countries in Western Africa. You CANNOT put a zero in the leaf spot because that implies that you have data for that stem-which you don’t. It means that no countries reported sixties, seventies, or one hundreds of infant deaths. Notice how 6, 7, and 10 have no data next to them. Should I skip numbers in my stem? You HAVE TO include all of the consecutive numbers from the first stem until the last one. What does it look like? The stem-and-leaf plot below shows the number of students enrolled in a dance class in the past 12 years.
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