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Appendix A- 23 Means. Complete chert and quartz H.H.D. Elastic flakes

	Quartz			Chert			Total
	Mean	N	Std. Deviation	Mean	N	Std. Deviation	Mean	N	Std. Deviation
Max Length	30.607	15	12.862	49.909	11	14.941	38.773	26	16.629
Max Width	30.713	15	12.181	29.836	11	9.351	30.342	26	10.875
Max Thickness	10.960	15	4.413	9.991	11	3.287	10.550	26	3.933
Platform Width	21.967	15	10.642	23.882	11	7.736	22.777	26	9.396
Platform Thickness	7.220	15	3.902	8.991	11	3.463	7.969	26	3.757
Weight	12.013	15	8.902	15.804	11	9.086	13.617	26	9.002
Length/Width ratio	1.046	15	0.414	1.758	11	0.518	1.347	26	0.576
Length/thickness ratio	3.000	15	1.059	5.320	11	1.537	3.982	26	1.715

Appendix A- 24 ANOVA. Complete chert and quartz H.H.D. Elastic flakes

		Sum of Squares	df	Mean Square	F	p
Weight	Between Groups	91.203	1	91.203	1.131	0.298
	Within Groups	1934.866	24	80.619
	Total	2026.070	25
Max Length	Between Groups	2364.473	1	2364.473	12.477	0.002
	Within Groups	4548.318	24	189.513
	Total	6912.791	25
Max Width	Between Groups	4.881	1	4.881	0.040	0.844
	Within Groups	2951.803	24	122.992
	Total	2956.683	25
Max Thickness	Between Groups	5.960	1	5.960	0.376	0.546
	Within Groups	380.685	24	15.862
	Total	386.645	25
Platform Width	Between Groups	23.276	1	23.276	0.256	0.618
	Within Groups	2184.010	24	91.000
	Total	2207.286	25
Platform Thickness	Between Groups	19.902	1	19.902	1.434	0.243
	Within Groups	333.053	24	13.877
	Total	352.955	25
Length/Thickness ratio	Between Groups	34.181	1	34.181	20.855	0.000
	Within Groups	39.335	24	1.639
	Total	73.516	25
Length/Width ratio	Between Groups	3.217	1	3.217	15.194	0.001
	Within Groups	5.082	24	.212
	Total	8.299	25

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