Research Article
Statistical Analysis of Rainfall Trend for Volta Region in Ghana
Table 6
Statistical summary of monthly rainfall data of middle zone.
| | Parameter (mm) | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| | Mean | 18.2 | 52.7 | 102.3 | 133.3 | 154.9 | 182.1 | 132.2 | 94.6 | 163.2 | 160.3 | 47.3 | 30.4 | | Median | 8.2 | 43.5 | 100.2 | 132.0 | 147.9 | 165.1 | 120.0 | 84.4 | 164.2 | 154.8 | 42.0 | 21.6 | | S.D. | 22.2 | 44.8 | 59.6 | 57.2 | 66.8 | 78.3 | 58.2 | 66.4 | 79.5 | 52.9 | 32.3 | 32.2 | | Variance | 490.9 | 2009.3 | 3553.4 | 3274.6 | 4460.5 | 6127.1 | 3384.8 | 4403.6 | 6332.2 | 2801.6 | 1041.9 | 1039.6 | | Skewness | 1.1 | 2.0 | 0.8 | −0.1 | 0.7 | 0.9 | 0.5 | 0.7 | 1.5 | 0.9 | 1.4 | 0.9 | | Kurtosis | 0.4 | 4.9 | 0.5 | −0.2 | 0.2 | 0.2 | 0.1 | −0.3 | 4.9 | 1.5 | 1.7 | −0.2 | | Min | 0.0 | 5.8 | 20.3 | 6.9 | 35.5 | 74.4 | 30.2 | 9.4 | 47.5 | 77.4 | 5.8 | 0.0 | | Max | 78.4 | 212.7 | 265.7 | 255.6 | 325.4 | 374.4 | 283.6 | 254.1 | 454.2 | 319.8 | 133.8 | 103.4 | | Range | 78.4 | 206.9 | 245.4 | 248.7 | 289.9 | 300.0 | 253.4 | 244.7 | 406.7 | 242.4 | 128.0 | 103.4 | | Sum | 564.0 | 1632.8 | 3169.9 | 4132.9 | 4800.7 | 5645.0 | 4097.1 | 2933.1 | 5060.3 | 4968.1 | 1419.8 | 911.8 | | CV | 1.2 | 0.9 | 0.6 | 0.4 | 0.4 | 0.4 | 0.4 | 0.7 | 0.4 | 0.3 | 0.6 | 1.0 |
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