Notice the use of the asterisk (*) to separate each stem of a group. It's hard to get a visualized measure of the variation when using the stem-and-leaf plot. The median is at (22 + 22)/2 22 and is marked by a box. You could group the rows as 0-1, 2-3, 4-5, and 6-7 Here is the stem-and-leaf plot that we made earlier in this section. When there are too many rows, we can condense a stem-and-leaf display by combining adjacent rows. You will end up with this display.įrom the display, you can clearly see that the stem 1 has the highest frequency and the stem 0 has the lowest frequency. (e) Construct a stem-and-leaf plot of the Film Lengths (min) data in Minitab. You can complete the stem-and-leaf display by doing just that for the other stems. Just put these leaves on the right of the vertical line and on the same line as 2 as shown below. To complete the display, just put the leaves on the right of the vertical line.įor example, using the raw data in the table above, going from left to right, and starting with the first line, there are seven numbers that have a stem of 2. Notice that the stems are in ascending order from top to bottom. The next step is to put all the stems on the left of the vertical line.
The first step is to identify all the stems.Īfter a close examination, we see that the stems are 0, 1, 2, 3, 4, 5, 6, and 7
Let’s use the table below to make a stem-and-leaf display. To make a stem-and-a-leaf display, just make a vertical line and put all the stems on the left of the vertical line and all the leaves on the right of the vertical line. You can use 0 as the stem and 9 as the leaf since 09 is the same as 9. How do we divide though the number 9 though into a stem and a leaf? Construct a stem-and-leaf display from raw data. We can divide the number 56 into a stem and a leaf. find the technologies make driving more enjoyable sEcnoN 2.3 Stem-and-Leaf Displays. The stem and leaf plot offers information similar to that conveyed by a histogram, and easily can be constructed without a computer.A stem-and-leaf display can also be used to organize only quantitative data.The data is arranged compactly since the stem is not repeated in multiple data points.Learn real-life applications for the most commonly used graphs and statistical tools. Quality Trainer contains more than 250 interactive lessons you can use and repeat at your own pace.
#Using minitab express to do a stem and leaf plot how to#
Stem and Leaf Plot Advantages: The stem and leaf plot essentially provides the same information as a histogram, with the following added benefits:
If a larger number of bins is desired, the stem may be 2 digits for larger numbers, or there may be two stems for each first digit – one for 2nd digits of 0 to 4 and the other for 2nd digits of 5 to 9. Alternatively, some people consider the rows to be stems and their digits to be leaves. The term “stem and leaf” is used to describe the diagram since it resembles the right half of a leaf, with the stem at the left and the outline of the edge of the leaf on the right. The result is a histogram turned on its side, constructed from the digits of the data. Using the data set’s numbers themselves to form a diagram, the stem and leaf plot (or simply, stemplot) is a histogram-style tabulation of data developed by John Tukey.Ĭonsider the following data set, sorted in ascending order: 8, 13, 16, 25, 26, 29, 30, 32, 37, 38, 40, 41, 44, 47, 49, 51, 54, 55, 58, 61, 63, 67, 75, 78, 82, 86, 95Ī stem and leaf plot of this data can be constructed by writing the first digits in the first column, then writing the second digits of all the numbers in that range to the right.
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