Page 285 - Area 9 - Relevant Document

32

o A. By the table of random numbers. Steps involved are:
STEP A1. Locate a starting point in a table of random numbers by closing
your eyes and pointing a to any position.

For our Example the starting point is at the intersection of the sixth row and
the twelfth ( single )column , as shown here.

STEP A2. Using the starting point obtained in step A1, read downward
vertically to obtain n = 20 distinct 3 digit random numbers. Three digit
random numbers are preferred because they are less likely to include ties
than one or two digit numbers. For our example, starting at the intersection
of the sixth row and the twelfth column, the 20 distinct three digit numbers
are as shown here together with their corresponding sequence and
appearance.

Random Sequence Random Sequence
Number Number
937 1 918 11
149 2 772 12
908 3 243 13
361 4 494 14
953 5 704 15
749 6 549 16
180 7 957 17
951 8 157 18
081 9 571 19
427 10 226 20

STEP A3. Rank the n random Numbers obtained in STEP A2 in
ascending or descending order. For our example, the 20 random numbers
are ranked from the smallest to the largest as shown in the table below.

Random Sequence Rank Random Sequence Rank
Number Number
937 1 17 918 11 16
149 2 2 772 12 14
908 3 15 243 13 6
361 4 7 494 14 9
953 5 19 704 15 12
749 6 13 549 16 10
180 7 4 957 17 20
951 8 18 157 18 3
081 9 1 571 19 11
427 10 8 226 20 5

STEP A4. Divide the n ranks derived in STEP A3 into t groups, each
consisting of r numbers, according to the sequence in which the random