Monday, November 26, 2012

Sampling size : Table Krejcie & Morgan





Those who conducting research might use Krejcie & Morgan for sampling size purposes. 

Table for Determining the Random Sample Size from a Determined Population:

If your population
is:
Then your random sample size should be:
If your population
is:
Then your random sample size should be:
10
10
440
205
15
14
460
210
20
19
480
214
25
24
500
217
30
28
550
226
35
32
600
234
40
36
650
242
45
40
700
248
50
44
750
254
55
48
800
260
60
52
850
265
65
56
900
269
70
59
950
274
75
63
1,000
278
80
66
1,100
285
85
70
1,200
291
90
73
1,300
297
95
76
1,400
302
100
80
1,500
306
110
86
1,600
310
120
92
1,700
313
130
97
1,800
317
140
103
1,900
320
150
108
2,000
322
160
113
2,200
327
170
118
2,400
331
180
123
2,600
335
190
127
2,800
338
200
132
3,000
341
210
136
3,500
346
220
140
4,000
351
230
144
4,500
354
240
148
5,000
357
250
152
6,000
361
260
155
7,000
364
270
159
8,000
367
280
162
9,000
368
290
165
10,000
370
300
169
15,000
375
320
175
20,000
377
340
181
30,000
379
360
186
40,000
380
380
191
50,000
381
400
196
75,000
382
420
201
1,000,000
384

Derived from: Krejcie, R. V., & Morgan, D. W. (1970). Determining sample size for research activities. Educational and Psychological Measurement, 30, 607-610.
This posting were re-blog from:  Khalid Amin: Table Krejcie & Morgan

 


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