| 95% CI | 99% CI | ||
Standard deviation | n | z-score | n | z-score |
0.51a | 5 | 1.96 | 8 | 2.58 |
0.52 - 1.00 | 16 | 1.96 | 27 | 2.58 |
1.00 - 1.50 | 35 | 1.96 | 60 | 2.58 |
1.50 - 1.94b | 58 | 1.96 | 101 | 2.58 |