Percentile List

EpiData Analysis
V1.0 implemented from build 149

Observation numbers used for percentiles with small N (N<20). The number is calculated using the formula:

Obs = Min(Max(RoundToInt(("N" + 1) * "Percentile"), 1), "N")

This table used for all percentiles in commands where relevant:

Percentil
N 0.01 0.025 0.05 0.10 0.25 0.50 0.75 0.90 0.95 0.975
1 1 1 1 1 1 1 1 1 1 1
2 1 1 1 1 1 2 2 2 2 2
3 1 1 1 1 1 2 3 3 3 3
4 1 1 1 1 1 3 4 4 4 4
5 1 1 1 1 2 3 5 5 5 5
6 1 1 1 1 2 4 5 6 6 6
7 1 1 1 1 2 4 6 7 7 7
8 1 1 1 1 2 5 7 8 8 8
9 1 1 1 1 3 5 8 9 9 9
10 1 1 1 1 3 6 8 10 10 10
11 1 1 1 1 3 6 9 11 11 11
12 1 1 1 1 3 7 10 12 12 12
13 1 1 1 1 4 7 11 13 13 13
14 1 1 1 2 4 8 11 14 14 14
15 1 1 1 2 4 8 12 14 15 15
16 1 1 1 2 4 9 13 15 16 16
17 1 1 1 2 5 9 14 16 17 17
18 1 1 1 2 5 10 14 17 18 18
19 1 1 1 2 5 10 15 18 19 19

E.g. for the 75% percentile of 12 observations the value of variable in question will be taken from observation 10

techdocs/analysis/percentiles.txt · Last modified: 2011/12/13 09:26 by torsten.bonde.christiansen
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