In archaeology, the depth (below surface grade) at which artifacts are found is

Question

In archaeology, the depth (below surface grade) at which artifacts are found is very important. Greater depths sometimes indicate older artifacts, perhaps from a different archaeological period. The figure below is a back-to-back stem plot showing the depths of artifact locations at two different archaeological sites. These sites are from similar geographic locations. Notice that the stems are in the center of the diagram. The leaves for Site I artifact depths are shown to the left of the stem, while the leaves for Site II are to the right of the stem (see Mimbres Mogollon Archaeology by A. I. Woosley and A. J. McIntyre, University of New Mexico Press) 51 21 025 cm at Site I and 20 cm at Site lI Site I Site II 5 2 0 5 5 5 0 3 0 0 0 05 5 5555 4 0 0 0 S 5 0 5 0 0 55 5555S0 6 0 00S5 S 5 555 5500 7 s 5 0 0 0 8 5 500 9 5 5 10 0 11 0 0 555 12 0 0 0 05 (a) What are the least and greatest depths of artifact finds at Site I? Least cm Greatest cm What are the least and greatest depths of artifact finds at Site II? Least cm Greatest cm (b) Describe the data distribution of depths of artifact finds at Site I fairly symmetric, centered near 70 cm strongly skewed to the right O fairly symmetric, centered near 90 cm fairly uniform in shape except for a gap

Explanation / Answer

Solution

a) Site 1

Least = 25 cm

greatest = 110cm

Site 2

Least = 20 cm

greatest = 125 cm

b) site 1 - failry symmetric centered near 70 cm

site 2 - fairly uniform in shape except for a gap

c) Yes it would appear that site probably was unoccupied during the period associated with 70 to 100 cm

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