Answer:
When you use large numbers and don't have categories.
Explanation:
Take these: 23, 27, 29, 35, 36, 41, 47, 48, 52. It is better as a stem and leaf.
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2 ][ 3 7 9
3 ][ 5 6
4 ][ 1 7 8
5 ][ 2
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If you use dot plot, it is recommended use amounts under 10.