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 Cant's get accurate unbiased variance. Alex009988 Programmer named Tim Posts: 6 Threads: 5 Joined: Aug 2019 Reputation: 0 Likes received: 0 #1 Aug-13-2019, 02:41 PM (This post was last modified: Aug-13-2019, 02:41 PM by Alex009988. Edited 1 time in total.) Hello. So that I use that code ```import numpy as np import math t=[0.10,0.15,0.16] Y=10000000; n=56 t1=[0]*n m=len(t) t1[0:m-1]=t s=math.sqrt(Y*(Y-n)/n*np.var(t1,ddof=1)) print(s) ```and get that output as 41935.996676144765 But the correct answer should be as 42295,3075809521 . How to get correct value of sampled variance? ichabod801 Bunny Rabbit Posts: 4,231 Threads: 94 Joined: Sep 2016 Reputation: 271 Likes received: 1262 #2 Aug-13-2019, 02:55 PM You have an extra 0 at the end. That is, t1 is 57 items long not 56. If you take out the 57th number, you get the correct value. Line 7 should be `t[0:m] = t`. Craig "Ichabod" O'Brien - xenomind.com I wish you happiness. Recommended Tutorials: BBCode, functions, classes, text adventures « Next Oldest | Next Newest »

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