![]() That is, we have 1000 three-digit numbers where 001 represents the first record, 999 the 999 th record and 0 th. The first step is to arrange the wages of 1000 employees, assigning a number from 000 to 999. Draw a sample of 25 records using the random numbers shown in Appendix 1 to draw a sample of 25 records. If a random number occurs twice, the second occurrence is omitted, and another number is selected as its replacement.Įxample #2: Assume that there are 77=1000 records of daily wages of the employees of the pharmaceutical industry. These numbers are underlined with bold faces. Note that the selected numbers are 130, 108, 61, 63, and 121. The process stops once we arrive at five numbers. Any number lying outside this range is omitted since they do not correspond to any unit in the population. Note that we choose only those numbers, which lie in the range 001-150. Suppose we start from the leftmost digit of the first row of the random number table in Appendix 1 and proceed downward until we achieve a sample of 5 units. Since 150 is a three-digit number, we merely read three-digit random numbers presented in the Appendix. ![]() Assign serial numbers 001, 002,….,150 to the 150 units in the population. The following examples are designed to illustrate how the selection of population elements can be made in practice.Įxample #1: Draw a simple random sample of size 5 from a population comprising 150 units employing a simple random sampling method. The process stops once you arrive at your desired sample size.If further, any random number is repeated, it must also be discarded and be replaced by a fresh random number appearing next.If at any stage of your selection, the random number chosen exceeds N, discard it, and choose the next random number.Move on to the next random number not exceeding N, vertically, horizontally, or in any other direction systematically and choose your second unit. ![]() If this random number is less than or equal to N, this is your first selected unit.Choose an N-digit random number from any point in the random number table.Decide on the random number table to be used.Assign serial numbers to the units in the population from 1 through.
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