Research Article
Statistical Analysis of Rainfall Trend for Volta Region in Ghana
Table 8
Statistical summary of monthly rainfall data of northern zone.
| | Parameter | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| | Mean (mm) | 7.7 | 11.1 | 38.2 | 93.9 | 128.8 | 217.2 | 210.9 | 227.6 | 252.3 | 142.5 | 22.2 | 7.6 | | Median (mm) | 0.0 | 0.3 | 35.2 | 82.3 | 125.4 | 213.5 | 201.9 | 243.6 | 235.2 | 119.8 | 6.3 | 0.7 | | S.D. (mm) | 16.0 | 19.6 | 31.6 | 61.3 | 80.0 | 83.4 | 94.0 | 80.3 | 70.3 | 93.9 | 31.1 | 16.0 | | Variance (mm) | 255.1 | 383.7 | 1000.6 | 3756.6 | 6394.8 | 6952.4 | 8831.9 | 6445.9 | 4947.0 | 8812.8 | 964.4 | 255.3 | | Skewness | 2.1 | 1.8 | 0.7 | 0.9 | 1.2 | 0.5 | 1.7 | ā0.3 | 0.9 | 1.3 | 1.6 | 2.8 | | Kurtosis | 3.8 | 1.8 | 0.1 | 0.4 | 3.1 | 0.2 | 3.6 | ā0.5 | 0.0 | 2.4 | 2.1 | 7.4 | | Min (mm) | 0.0 | 0.0 | 0.0 | 7.3 | 6.0 | 93.6 | 91.7 | 73.0 | 146.8 | 9.2 | 0.0 | 0.0 | | Max (mm) | 60.0 | 65.7 | 117.3 | 245.6 | 398.6 | 430.2 | 498.1 | 373.5 | 400.6 | 440.7 | 112.0 | 66.1 | | Range (mm) | 60.0 | 65.7 | 117.3 | 238.3 | 392.6 | 336.6 | 406.4 | 300.5 | 253.8 | 431.5 | 112.0 | 66.1 | | Sum (mm) | 231.6 | 323.3 | 1107.5 | 2817.5 | 3864.7 | 6516.0 | 6326.4 | 6827.3 | 7567.5 | 4274.7 | 665.9 | 228.9 | | CV | 2.1 | 1.7 | 0.8 | 0.6 | 0.6 | 0.3 | 0.4 | 0.3 | 0.2 | 0.6 | 1.3 | 2.1 |
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