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Unformatted text preview: 90419 01241 52516 66293 14536 23870 78402 41759 77422 76289 57587 42831 87047 20092 92676 12017 43554 33602 01931 66913 63008 03745 93939 07178 70003 18158 62298 69126 07862 76731 58527 39342 42749 57050 91725 55652 11834 47581 25682 64085 26587 92289 41853 38354 56009 06021 98392 40450 87721 50917 16978 39472 23505 47314 96988 89931 49395 37071 72658 53947 11996 64631 20350 87362 83996 86422 58694 71813 97695 28804 58523 27000 97805 25042 09916 77569 71347 62667 09330 02152 91056 08939 93410 59204 04644 44336 55570 21106 76588 82054 45944 55398 55487 56455 56940 68787 36591 29914 91941 86714 76593 77199 39724 99548 13827 84961 76740 67607 14549 08215 95408 46381 12449 03672 40325 77312 84469 26047 86003 34786 38931 34846 28711 42833 93019 71365 76603 57440 49514 17335 71969 58055 99136 73589 48079 71198 95859 94212 55402 93392 31965 94622 11673 64805 34133 03245 24546 48934 41730 47831 26531 02203 93224 87153 54541 57529 38299 65659 00202 07054 40168 15799 93126 74180 94171 97117 31431 00323 62793 11995 37884 74411 45887 36713 52339 68421 35968 67714 05883 21782 35804 36676 35404 69987 52268 19894 81977 87764 04356 68903 21369 35901 86797 83901 68681 02397 55359 17165 67843 49349 90163 97337 35003 34915 91485 33814 95028 48468 12279 81039 56531 10759 19579 00015 22829 49661 13988 75909 35580 18426 29038 79111 56049 96451 60748 03412 09880 94091 90052 43596 21424 16584 67970 05552 54344 69418 01327 07771 25364 77373 34841 75927 15177 63049 12464 16149 18759 96184 15968 89446 07168 9 Example: Sample Selection • Select random sample using random number table – Of size n = 4 from a population of size N = 861, starting at row 21, column 3 of the Table of Random Digits • Start with random digits 52794 01466 85938 14565 79993 … • Group by 3 (because N = 861 has 3 digits) 527 940 146 685 938 145 657 … • Omit 000, and also 862, 863, …, 999 • Omit duplicates, until n = 4 are obtained in the sample 527 146 685 145 • The random sample includes the following population units (numbered by frame): 527, 146, 685, 145 ECO 3411 10 Terminology of Sampling • Representative Sample – Same percentages in sample as in population • Example: sample is representative if same percent: – work, are young/old, are single/married, etc … • Biased Sample – Not representative of pop...
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