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Talk:Stem-and-leaf plot: Difference between revisions
→Less Useful for negative numbers?
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Which also satisfies X | Y where 10*X + Y is a datum, the last digit is preserved, but I don't like the negative leaf numbers. <br>
What thinketh though? --[[User:Paddy3118|Paddy3118]] 13:38, 16 December 2009 (UTC)
Per Wikipedia, you generate a -0 stem, not a -1 stem, before the 0 stem, and use the actual digits -- that is, for your data
-1 | 4 5
-0 | 1 2 3
0 | 0 1 2 3
1 | 4 5
However, in general the choice of what goes in the stems and the leaves is a choice for whatever best illustrates the particular data set. In ''this task'', there are no negative numbers.
Also, your second example is problematic because the 0 stem contains a wider span (19 values, -9..9) than the 10 of every other stem, so it distorts the data. On the other hand, the -0 strategy means that the -0 stem has a range of -9..-1 with only 9 elements whereas everything else has 10. I like your first example for uniformity but it seems confusing to read which sort of defeats the point. —[[User:Kevin Reid|Kevin Reid]] 13:50, 16 December 2009 (UTC)
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