0
2
4
6
8
10
12
14
16
18
20
22
24
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
Gamma(α = 1, θ = 2)
Gamma(α = 2, θ = 2)
Gamma(α = 3, θ = 2)
Gamma(α = 5, θ = 1)
Gamma(α = 9, θ = 0.5)
Gamma(α = 7.5, θ = 1)
0
2
4
6
8
10
12
14
16
18
20
22
24
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0