Use of the Random Number Table - A random number table is often used for
subject assignment and sample selection. While subjects can be selected or assigned by
drawing their name out of a hat, a more elegant method is to use a random number table.
The steps below illustrate the use of a random number table.
To use the table:
To use the table:
- List subjects in any convenient order, i.e., alphabetical
- Close your eyes and point to any row of the table.
- Close your eyes and point to any column.
- Begin at the intersection of the row and column you picked. Assign the random numbers that appear in the column to your subjects, e.g., the first number is given to the first subject on the list.
- When you get to the end of the column of numbers begin over with the next column.
- Now order your subjects by their assigned random numbers.
- You now have a list of randomly ordered subjects, you can assign them to groups by just taking the first k subjects for group 1, the next k subjects for group 2, and so on until all are assigned.
Table of Random Numbers
ROW |
COLUMN
|
|||
1
|
2
|
3
|
4
|
|
1
|
10480
|
91646
|
16308
|
51259
|
2
|
22368
|
89198
|
19885
|
60268
|
3
|
24130
|
64809
|
04146
|
64904
|
4
|
42167
|
16376
|
14413
|
58586
|
5
|
37570
|
91782
|
06691
|
09998
|
6
|
88321
|
53498
|
30168
|
29119
|
7
|
48235
|
31016
|
25306
|
63553
|
8
|
52636
|
20922
|
38005
|
09429
|
9
|
87529
|
18103
|
00256
|
42751
|
10
|
71048
|
59533
|
92420
|
19734
|
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