i dont know but it is 17, 42, 56, 62, 75, 92
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The standard deviation of the scores 100 92 94 95 81 82 87 89 71 71 73 61 62 68 51 55 is: 15.1921
92%
92nd percentile is the value below which 92 percent of the cases fall. If in a test your 92nd percentile score is 70, it means 92 percent of the students scored below 70.
For 98 78 86 88 84 81 93 92 89 and 81: σ=6.2361
1.75