Is there a correlation between head circumference and intelligence, as measured by GCSE scores? Our research says no.
Raw data:
| MALE | Head Size (cm) | GCSE Score | TOPLINE | BOTTOMLEFT | BOTTOMRIGHT | |
| 60.4 | 45 | 12.87 | 115.025625 | 21.855625 | ||
| 57.2 | 48 | 31.605 | 56.625625 | 2.805625 | ||
| 57.5 | 44 | 1.565 | 61.230625 | 32.205625 | ||
| 56.4 | 41 | -18.83 | 45.225625 | 75.255625 | ||
| 57.1 | 44 | 1.485 | 55.130625 | 32.205625 | ||
| 56.6 | 42 | -12.465 | 47.955625 | 58.905625 | ||
| 54.9 | 42 | -9.405 | 27.300625 | 58.905625 | ||
| 55.3 | 38 | -32.625 | 31.640625 | 136.305625 | ||
| 55.6 | 49 | 30.81 | 35.105625 | 0.455625 | ||
| 57.5 | 42 | -14.085 | 61.230625 | 58.905625 | ||
| 56.9 | 43 | -5.78 | 52.200625 | 44.555625 | ||
| 54.3 | 41 | -12.95 | 21.390625 | 75.255625 | ||
| 57.4 | 42 | -13.905 | 59.675625 | 58.905625 | ||
| 56.9 | 42 | -13.005 | 52.200625 | 58.905625 | ||
| 53.5 | 44 | 0.765 | 14.630625 | 32.205625 | ||
| 56.7 | 40 | -26.695 | 49.350625 | 93.605625 | ||
| 58.3 | 39 | -41.4 | 74.390625 | 113.955625 | ||
| 57.7 | 43 | -6.42 | 64.400625 | 44.555625 | ||
| 53.5 | 40 | -14.535 | 14.630625 | 93.605625 | ||
| 60.3 | 40 | -40.375 | 112.890625 | 93.605625 | ||
| 57.2 | 45 | 9.03 | 56.625625 | 21.855625 | ||
| 53.6 | 47 | 12.56 | 15.405625 | 7.155625 | ||
| 58.6 | 51 | 64.26 | 79.655625 | 1.755625 | ||
| 52.3 | 53 | 24.15 | 6.890625 | 11.055625 | ||
| 55.1 | 40 | -20.615 | 29.430625 | 93.605625 | ||
| 54.0 | 36 | -33.735 | 18.705625 | 187.005625 | ||
| 54.1 | 43 | -3.54 | 19.580625 | 44.555625 | ||
| 57.1 | 49 | 38.61 | 55.130625 | 0.455625 | ||
| 53.6 | 45 | 4.71 | 15.405625 | 21.855625 | ||
| 54.4 | 46 | 10.395 | 22.325625 | 13.505625 | ||
| FEMALE | 56 | 38 | -36.685 | 40.005625 | 136.305625 | |
| 60.0 | 47 | 33.04 | 106.605625 | 7.155625 | ||
| 58.8 | 40 | -34.675 | 83.265625 | 93.605625 | ||
| 56.1 | 53 | 59.11 | 41.280625 | 11.055625 | ||
| 52.1 | 37 | -16.49 | 5.880625 | 160.655625 | ||
| 53.0 | 37 | -22.61 | 11.055625 | 160.655625 | ||
| 56.5 | 49 | 35.49 | 46.580625 | 0.455625 | ||
| 55.9 | 45 | 7.47 | 38.750625 | 21.855625 | ||
| 56.2 | 36 | -50.895 | 42.575625 | 187.005625 | ||
| 55.0 | 37 | -36.21 | 28.355625 | 160.655625 | ||
| 52.5 | 51 | 20.34 | 7.980625 | 1.755625 | ||
| 55.0 | 40 | -20.235 | 28.355625 | 93.605625 | ||
| 58.8 | 37 | -62.05 | 83.265625 | 160.655625 | ||
| 56.1 | 44 | 1.285 | 41.280625 | 32.205625 | ||
| 55.9 | 48 | 26.145 | 38.750625 | 2.805625 | ||
| 56.0 | 50 | 39.215 | 40.005625 | 0.105625 | ||
| 52.7 | 48 | 12.705 | 9.150625 | 2.805625 | ||
| 57.2 | 45 | 9.03 | 56.625625 | 21.855625 | ||
| 56.7 | 39 | -33.72 | 49.350625 | 113.955625 | ||
| 60.2 | 41 | -29.47 | 110.775625 | 75.255625 | ||
| 53.4 | 40 | -14.155 | 13.875625 | 93.605625 | ||
| 57.9 | 41 | -23.03 | 67.650625 | 75.255625 | ||
| 53.9 | 50 | 26.195 | 17.850625 | 0.105625 | ||
| 57.5 | 51 | 56.34 | 61.230625 | 1.755625 | ||
| 59.1 | 40 | -35.815 | 88.830625 | 93.605625 | ||
| 57.7 | 44 | 1.605 | 64.400625 | 32.205625 | ||
| 52.3 | 53 | 24.15 | 6.890625 | 11.055625 | ||
| 58.5 | 50 | 54.715 | 77.880625 | 0.105625 | ||
| 58.5 | 46 | 19.415 | 77.880625 | 13.505625 | ||
| 60.0 | 47 | 33.04 | 106.605625 | 7.155625 | ||
| 2980.5 | 2628 | -34.3 | 2864.3825 | 3362.5375 |
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