The following table shows the ages of 256 observers, distributed within eleven outlets that are required:

Choose a random sample using a 24-observers by Microsoft Excel tool Pak

Choose a regular sample using a Microsoft Excel tool Pak with a withdrawal Range of 10 employees

outlet11 outlet10 outlet outlet8 outlet7 outlet outlet5 outlet4 outlet3 outlet2 outlet1 7 Periodic Random 52 26 49 Categories 20 25 30 35 40 5 55 59 48 50 61 37 43 26 47 36 46 34 66 40 29 38 50 48 48 40 64 48 64 54 62 66 56 44 60 52 62 78 54 68 48 50 50 55 60 65 48 61 47 44 50 48 58 48 58 50 49 23 26 42 35 45 39 36 54 47 59 59 46 47 57 46 41 60 9 10 | 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 40 44 43 50 37 68 44 48 62 60 52 54 59 46