Enterprise Risk Management Formula Book
Appendix A.7(b): Probability
Distributions: Standard (i.e. unit) normal distribution: Quantile points
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The table below gives (percentage) quantile points  for
the unit normal distribution defined by the equation:
 for
the unit normal distribution defined by the equation:
 

 
 
  | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
  | 50% | 0.0000 | 5.0% | -1.6449 | 2.0% | -2.0537 | 1.0% | -2.3263 | 0.10% | -3.0902 | 
 
  | 45% | -0.1257 | 4.5% | -1.6954 | 1.9% | -2.0749 | 0.9% | -2.3656 | 0.09% | -3.1214 | 
 
  | 40% | -0.2533 | 4.0% | -1.7507 | 1.8% | -2.0969 | 0.8% | -2.4089 | 0.08% | -3.1559 | 
 
  | 35% | -0.3853 | 3.5% | -1.8119 | 1.7% | -2.1201 | 0.7% | -2.4573 | 0.07% | -3.1947 | 
 
  | 30% | -0.5244 | 3.0% | -1.8808 | 1.6% | -2.1444 | 0.6% | -2.5121 | 0.06% | -3.2389 | 
 
  |   |   |   |   |   |   |   |   |   |   | 
 
  | 25% | -0.6745 | 2.5% | -1.9600 | 1.5% | -2.1701 | 0.5% | -2.5758 | 0.05% | -3.2905 | 
 
  | 20% | -0.8416 | 2.4% | -1.9774 | 1.4% | -2.1973 | 0.4% | -2.6521 | 0.01% | -3.7190 | 
 
  | 15% | -1.0364 | 2.3% | -1.9954 | 1.3% | -2.2262 | 0.3% | -2.7478 | 0.005% | -3.8906 | 
 
  | 10% | -1.2816 | 2.2% | -2.0141 | 1.2% | -2.2571 | 0.2% | -2.8782 | 0.001% | -4.2649 | 
 
  | 5% | -1.6449 | 2.1% | -2.0335 | 1.1% | -2.2904 | 0.1% | -3.0902 | 0.0005% | -4.4172 | 
 
For calculations of specific values of this table see e.g.:
 
 
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