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Table 2 Values of η ( n ) in the formula ( 12 ) and the formula ( 15 ) for Q ≤50, where n =4 Q +1

From: Estimating the sample mean and standard deviation from the sample size, median, range and/or interquartile range

Q η( n) Q η( n) Q η( n) Q η( n) Q η( n)
1 0.990 11 1.307 21 1.327 31 1.334 41 1.338
2 1.144 12 1.311 22 1.328 32 1.334 42 1.338
3 1.206 13 1.313 23 1.329 33 1.335 43 1.338
4 1.239 14 1.316 24 1.330 34 1.335 44 1.338
5 1.260 15 1.318 25 1.330 35 1.336 45 1.339
6 1.274 16 1.320 26 1.331 36 1.336 46 1.339
7 1.284 17 1.322 27 1.332 37 1.336 47 1.339
8 1.292 18 1.323 28 1.332 38 1.337 48 1.339
9 1.298 19 1.324 29 1.333 39 1.337 49 1.339
10 1.303 20 1.326 30 1.333 40 1.337 50 1.340