If the leaves become too crowded, then it might be useful to split each stem into two or more components. With only one stem, the leaves are overcrowded. The organization of this stem and leaf plot does not give much information about the data. Make an ordered stem and leaf plot for this table. Top of Page Example 3 – Making an ordered stem and leaf plotįifteen people were asked how often they drove to work over 10 working days. Using the data from Table 2, we made the ordered stem and leaf plot shown below: Also, there is no need to separate the leaves (digits) with punctuation marks (commas or periods) since each leaf is always a single digit. Usually, a stem and leaf plot is ordered, which simply means that the leaves are arranged in ascending order from left to right.
stem 2 represents the class interval 20 to 29. stem 1 represents the class interval 10 to 19 and. stem 0 represents the class interval 0 to 9. The stem and leaf plot should look like this: Tip: The number 6 can be written as 06, which means that it has a stem of 0 and a leaf of 6. Prepare a stem and leaf plot for these data. Top of Page Example 2 – Making a stem and leaf plotĪ teacher asked 10 of her students how many books they had read in the last 12 months. Use the marks from something like all of your exam results last year or the points your sports team accumulated this season. Are most of Elliot's scores in the 10s, 20s or under 10? It is difficult to know from the plot whether Elliot has improved or not because we do not know the order of those scores. What is his most common score on the geography quizzes? What is his highest score? His lowest score? Rotate the stem and leaf plot onto its side so that it looks like a bar graph. Elliot's scores on the basic facts quiz last yearĪnalyse Elliot's stem and leaf plot. This is what his marks looked like plotted out: Every day, Elliot recorded his quiz marks on a stem and leaf plot. As the year passed, each student tried to improve his or her quiz marks. The class marked them together and everyone kept a record of their personal scores. Example 1 – Making a stem and leaf plotĮach morning, a teacher quizzed his class with 20 geography questions. Not quite getting it? Try some exercises. In stem and leaf plots, tally marks are not required because the actual data are used. If the range of values is too great, the number 23.7 can be rounded up to 24 to limit the number of stems. Where observations are accurate to one or more decimal places, such as 23.7, the stem is 23 and the leaf is 7. If the observed value is 369, then the stem is 36 and the leaf is 9. These will be your leaves.įor example, if the observed value is 25, then the stem is 2 and the leaf is the 5. On the other side of the line, write down the ones (the last digit of a number). Draw a line to the right of these stems. 
On the left hand side of the page, write down the thousands, hundreds or tens (all digits but the last one). Once you have decided that a stem and leaf plot is the best way to show your data, draw it as follows: #SAMPLE MEAN HISTOGRAM MAKER NOT A BAR GRAPH HOW TO#
Top of Page Tips on how to draw a stem and leaf plot shows how the data are spread-that is, highest number, lowest number, most common number and outliers (a number that lies outside the main group of numbers).looks like a bar graph when it is turned on its side.For example, test results, speeds, heights, weights, etc. Anything that has a decimal point is rounded to the nearest whole number. shows the first digits of the number (thousands, hundreds or tens) as the stem and shows the last digit (ones) as the leaf.The leaf of the number will always be a single digit.
The stem of the number includes all but the last digit. Each number in the data is broken down into a stem and a leaf, thus the name. A stem and leaf plot is used to organize data as they are collected.Ī stem and leaf plot looks something like a bar graph. Example 6 – Using stem and leaf plots as graphĪ stem and leaf plot, or stem plot, is a technique used to classify either discrete or continuous variables.
Example 5 – Splitting stems using decimal values. Example 3 – Making an ordered stem and leaf plot. Example 2 – Making a stem and leaf plot. 
The main advantage of a stem and leaf plot. Example 1 – Making a stem and leaf plot. Tips on how to draw a stem and leaf plot. Please contact us to request a format other than those available. It is not subject to the Government of Canada Web Standards and has not been altered or updated since it was archived. Information identified as archived is provided for reference, research or recordkeeping purposes.
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