III. SAMPLE SIZE FOR THE RESIDENTIAL SECTOR CORRECTED FOR FINITE POPULATION
Assuming CV = 0.50 for the variable specific consumption of fuelwood in the residential sector and a level of confidence = 0.95, e = probable error.
no =
(cv2 . t2
, v)/ e2
n = no/(1 + no/N)
|
Universe |
Sample | |||
e=10% |
e=15% |
e=20% |
e=30% | |
40 |
28 |
21 |
15 |
9 |
50 |
33 |
23 |
16 |
9 |
60 |
37 |
25 |
17 |
9 |
100 |
50 |
30 |
20 |
10 |
150 |
59 |
34 |
21 |
10 |
200 |
66 |
36 |
22 |
10 |
250 |
71 |
37 |
22 |
10 |
300 |
74 |
38 |
23 |
11 |
350 |
77 |
39 |
23 |
11 |
400 |
79 |
39 |
23 |
11 |
500 |
82 |
40 |
23 |
11 |
600 |
85 |
41 |
24 |
11 |
700 |
86 |
41 |
24 |
11 |
800 |
88 |
42 |
24 |
11 |
900 |
89 |
42 |
24 |
11 |
1000 |
90 |
42 |
24 |
11 |
2500 |
95 |
43 |
24 |
11 |
5000 |
97 |
43 |
25 |
11 |