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Table 2 Sample characteristics

From: Development of the Arithmetic Subtest of the School Achievement Test-Second Edition

   Type of school Gender Age
Grade N Public Private Female Male Mean SD
1st 24 13 11 11 13 7.0 0.43
2nd 26 14 12 13 13 7.8 0.63
3rd 32 19 13 18 14 9.0 0.96
4th 48 35 13 25 23 9.8 0.99
5th 49 22 27 21 28 10.9 0.57
6th 50 27 23 32 18 12.1 0.91
7th 31 13 18 13 18 13.0 0.63
8th 29 16 13 12 17 14.1 0.98
9th 13 0 13 5 8 14.5 0.52
Total 302 159 143 150 152 10.8 2.32