Table 4: Statistical comparison of the abundances of 15 elements for cluster and field  Scuti stars.

	Cluster				Field				t	Pr
El.	#	mean	rms		#	mean	rms
C	7	+0.22	0.28		6	+0.10	0.30		0.753	0.467
O	4	-0.02	0.33		2	-0.07	0.23		0.196	0.854
Na	7	+0.12	0.41		3	+0.21	0.25		0.346	0.738
Mg	8	-0.06	0.40		7	+0.11	0.33		0.858	0.407
Si	8	+0.22	0.33		7	-0.02	0.26		1.511	0.155
S	5	+0.47	0.29		7	+0.36	0.30		0.672	0.517
Ca	8	+0.12	0.40		7	+0.11	0.29		0.092	0.928
Sc	8	+0.16	0.43		7	+0.04	0.29		0.605	0.556
Ti	8	+0.17	0.34		7	+0.26	0.27		0.572	0.577
Cr	7	+0.04	0.31		7	+0.04	0.37		0.016	0.988
Mn	7	+0.02	0.37		4	+0.25	0.28		1.120	0.292
Fe	8	+0.08	0.30		7	+0.08	0.31		0.001	0.999
Ni	8	+0.09	0.37		6	-0.09	0.34		0.916	0.378
Y	7	+0.39	0.34		6	+0.36	0.30		0.210	0.838
Ba	8	+0.32	0.39		7	+0.55	0.34		1.179	0.260
	108				90				0.060	0.952

For each element, the number of stars, the mean abundance, and the standard error is given. The last two columns represent the t values for a paired Student test and the resulting probabilities (Pr) that the two samples are taken from the same statistical population. The bottom row refers to the overall statistics for all elements.