| Central Tendency - Ungrouped Data | |||
| Measure | Value | S.E. | Value/S.E. |
| Arithmetic Mean | 275.390909090909 | 13.9367083710748 | 19.7601113375146 |
| Geometric Mean | 259.545475544324 | ||
| Harmonic Mean | 246.186724356556 | ||
| Quadratic Mean | 293.817412999669 | ||
| Winsorized Mean ( 1 / 18 ) | 275.407272727273 | 13.9252786767768 | 19.7775052923407 |
| Winsorized Mean ( 2 / 18 ) | 275.48 | 13.8655740634041 | 19.8679116162298 |
| Winsorized Mean ( 3 / 18 ) | 274.050909090909 | 13.2272153052776 | 20.7187153732626 |
| Winsorized Mean ( 4 / 18 ) | 272.283636363636 | 12.5004028928031 | 21.7819888445675 |
| Winsorized Mean ( 5 / 18 ) | 271.210909090909 | 12.1282691931314 | 22.3618807244569 |
| Winsorized Mean ( 6 / 18 ) | 271.603636363636 | 11.9685809120403 | 22.693052614985 |
| Winsorized Mean ( 7 / 18 ) | 251.469090909091 | 6.81379807895638 | 36.90586189892 |
| Winsorized Mean ( 8 / 18 ) | 251.789090909091 | 6.66615941137224 | 37.7712375853999 |
| Winsorized Mean ( 9 / 18 ) | 250.496363636364 | 6.44680797670137 | 38.8558748052761 |
| Winsorized Mean ( 10 / 18 ) | 251.187272727273 | 6.17132450601613 | 40.7023277551524 |
| Winsorized Mean ( 11 / 18 ) | 253.327272727273 | 5.71071145157365 | 44.3600197410545 |
| Winsorized Mean ( 12 / 18 ) | 257.232727272727 | 4.91327279168973 | 52.3546601580536 |
| Winsorized Mean ( 13 / 18 ) | 257.327272727273 | 4.88018839299753 | 52.7289629016178 |
| Winsorized Mean ( 14 / 18 ) | 260.050909090909 | 4.39163719555961 | 59.2150256295868 |
| Winsorized Mean ( 15 / 18 ) | 261.36 | 4.10869374738058 | 63.6114580617319 |
| Winsorized Mean ( 16 / 18 ) | 261.330909090909 | 3.92591482634973 | 66.5656084377896 |
| Winsorized Mean ( 17 / 18 ) | 261.083636363636 | 3.74740292887701 | 69.6705535323568 |
| Winsorized Mean ( 18 / 18 ) | 260.298181818182 | 3.43477413223274 | 75.783201979857 |
| Trimmed Mean ( 1 / 18 ) | 272.650943396226 | 13.2773049222668 | 20.5351119818733 |
| Trimmed Mean ( 2 / 18 ) | 269.678431372549 | 12.4444136025597 | 21.6706419430707 |
| Trimmed Mean ( 3 / 18 ) | 266.422448979592 | 11.3952293639051 | 23.3801743230810 |
| Trimmed Mean ( 4 / 18 ) | 263.446808510638 | 10.3705815914312 | 25.4032819845238 |
| Trimmed Mean ( 5 / 18 ) | 260.746666666667 | 9.35349964214227 | 27.8769098885588 |
| Trimmed Mean ( 6 / 18 ) | 258.069767441860 | 8.11682319442012 | 31.7944300695461 |
| Trimmed Mean ( 7 / 18 ) | 258.069767441860 | 6.33676174203921 | 40.7258120073822 |
| Trimmed Mean ( 8 / 18 ) | 255.764102564103 | 6.11638083647799 | 41.8162487591894 |
| Trimmed Mean ( 9 / 18 ) | 256.502702702703 | 5.86034349873969 | 43.7692266260272 |
| Trimmed Mean ( 10 / 18 ) | 257.551428571429 | 5.56507472210976 | 46.2799587484764 |
| Trimmed Mean ( 11 / 18 ) | 258.612121212121 | 5.23759312778953 | 49.3761380279773 |
| Trimmed Mean ( 12 / 18 ) | 259.464516129032 | 4.93338756520707 | 52.5935805163408 |
| Trimmed Mean ( 13 / 18 ) | 259.817241379310 | 4.77572130823491 | 54.4037695271916 |
| Trimmed Mean ( 14 / 18 ) | 259.817241379310 | 4.54055146168802 | 57.2215167191871 |
| Trimmed Mean ( 15 / 18 ) | 260.207407407407 | 4.36177226976986 | 59.656348684416 |
| Trimmed Mean ( 16 / 18 ) | 260.052173913043 | 4.17694533299524 | 62.2589364191087 |
| Trimmed Mean ( 17 / 18 ) | 259.842857142857 | 3.93770885419531 | 65.988336559219 |
| Trimmed Mean ( 18 / 18 ) | 259.631578947368 | 3.60156766250167 | 72.08849125634 |
| Median | 264.6 | ||
| Midrange | 348 | ||
| Midmean - Weighted Average at Xnp | 258.410714285714 | ||
| Midmean - Weighted Average at X(n+1)p | 259.817241379310 | ||
| Midmean - Empirical Distribution Function | 259.817241379310 | ||
| Midmean - Empirical Distribution Function - Averaging | 259.817241379310 | ||
| Midmean - Empirical Distribution Function - Interpolation | 260.207407407407 | ||
| Midmean - Closest Observation | 258.410714285714 | ||
| Midmean - True Basic - Statistics Graphics Toolkit | 259.817241379310 | ||
| Midmean - MS Excel (old versions) | 259.817241379310 | ||
| Number of observations | 55 | ||
