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(a)
Elevation (m)
0
400
800
1200
1600
2000
2400
2800
3200
4000
4800
5600
6400
Pressure (kPa)
100
98.5
97
95.5
94
92
90.5
89
87.5
83.5
80
77.5
75
Vapour pressure (kPa)
2.25
2.0
1.8
1.6
1.45
1.3
1.15
1.03
0.93
0.74
0.59
0.48
0.38
If 58% of the perceptible water is produced from the air up to an elevation of 6400 m to form rainfall at the ground level, what would be the depth of the rainfall?
(b)
After the passage of a cyclone over the Northern Queensland, the rainfall stations A, B and C within a reserve area in the form of a square recorded X mm, 1.5 X mm and 1.25 X mm respectively. Estimate the mean areal precipitation over the reserve first by the arithmetic mean method and then by Thiessen polygon method. (X=58)
1. Calculate the mean and mode of: Central size 15 25 35 45 55 65 75 85 Frequencies 5 9 13 21 20 15 8 3 The following data shows the monthly expenditure of 80 students of
Calculation for Discrete Series or Ungrouped Data The formula for computing mean is = where, f = fr
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