11/18/2023 0 Comments Stem and leaf plot explained![]() By turning a stemplot on its side, it will resemble a histogram and provide similar visual information.ġ. The amount of distribution spread and any large deviations from the general pattern (outliers) can be quickly spotted on the graph.Ī stemplot is a simple kind of graph that is made out of the numbers themselves, and is a means of displaying the main features of a distribution. (A more precise technique of finding this mid-point is described in a later section.) A stemplot makes this easy, as the data are arranged in ascending order. Obviously, this method is impracticable for very large sets of data. Locating the centre (median) of a distribution can be done by counting half the observations up from the smallest. The numbers of books ten students read in one year were as follows: In stemplots, tally marks are not required as the actual data are used.ġ. (The number 23.7 could be rounded off to 24 to limit the number of stems if the range of values is too great.) Where observations are accurate to one or more decimal places, such as 23.7, the stem is 23 and the leaf is 7.
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