P1 P2 P3 P4 P5 P6
Num( P# = 0 ) 29 391 394 94 106 443
Num( P# = 1 ) 17 124 57 120 92 103
Num( P# = 2 ) 63 14 34 31 127 7
Num( P# = 3 ) 52 2 13 16 20 2
Num( P# = 4 ) 18 4 7 8 20 0
Num( P# = 5 ) 17 2 3 8 9 3
Num( P# = 6 ) 14 5 5 20 20 0
Num( P# = 7 ) 354 22 51 267 170 6
Mean( P# ) 5.351 0.652 1.053 4.062 3.264 0.319
Max( P# ) 7 7 7 7 7 7
σ( P# ) 2.363 1.536 2.126 3.040 2.782 0.904
Corr( P#, Sum ) 0.732 0.508 0.622 0.805 0.833 0.356
Corr( P#, P1 ) 0.235 0.266 0.548 0.515 0.160
Corr( P#, P2 ) 0.235 0.220 0.335 0.299 0.134
Corr( P#, P3 ) 0.266 0.220 0.281 0.467 0.332
Corr( P#, P4 ) 0.548 0.335 0.281 0.585 0.117
Corr( P#, P5 ) 0.515 0.299 0.467 0.585 0.226
Corr( P#, P6 ) 0.160 0.134 0.332 0.117 0.226
http://official.imo2011.nl/year_statistics.aspx?year=2011
第2題得分率比第3題還要低 XD