Guess the Standard Deviation

You'll see 10 histograms. Guess the standard deviation of each one within 5 seconds. Lower score = better!
How to play

Leaderboard (Top 20)

#PlayerScoreDate
1 Lydia 0.0773 2026-03-28
2 Lydia 0.0892 2026-03-23
3 Lydia 0.1047 2026-03-23
4 Lydia 0.1050 2026-03-23
5 Lydia 0.1132 2026-03-22
6 Thomas 0.1233 2026-03-22
7 Claude 0.1268 2026-03-22
8 Ethan 0.1284 2026-03-22
9 Lydia 0.1339 2026-03-23
10 Ethan 0.1356 2026-03-22
11 Ethan 0.1359 2026-03-22
12 Ethan 0.1393 2026-03-22
13 Ethan 0.1394 2026-03-22
14 Lydia 0.1457 2026-03-23
15 Thomas 0.1489 2026-03-22
16 Thomas 0.1510 2026-03-22
17 Ethan 0.1515 2026-03-22
18 Ethan 0.1536 2026-03-22
19 Ethan 0.1545 2026-03-22
20 Thomas 0.1551 2026-03-22