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Stratified Sampling

Stratified Sampling. To sample equally amongst heterogeneous groups . 1. Find the Totals. 1500. 7000. 46000. 47000. 22000. 68000. 9000. 2 . Find the Percentages. 1500. 2.9%. 13.2%. 5.9%. 22.1%. 7000. 1.5%. 5.9%. 2.9%. 10.3%. 46000. 50.0%. 8.8%. 8.8%. 67.6%. 68000. 9000.

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Stratified Sampling

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  1. Stratified Sampling

  2. To sample equally amongst heterogeneous groups

  3. 1. Find the Totals 1500 7000 46000 47000 22000 68000 9000

  4. 2. Find the Percentages 1500 2.9% 13.2% 5.9% 22.1% 7000 1.5% 5.9% 2.9% 10.3% 46000 50.0% 8.8% 8.8% 67.6% 68000 9000 12000 47000 100% 13.2% 69.1% 17.6% Eg1: Matane 0-14 =2000/68000 x 100 = 2.9% Check Eg 2: Rimouski 64+ = 6000/68000 x 100 = 8.8%

  5. 3. Find Sample Sizes 1500 2.9% 13.2% 5.9% 22.1% 7000 1.5% 5.9% 2.9% 10.3% 46000 50.0% 8.8% 8.8% 67.6% 68000 9000 12000 47000 100% 13.2% 69.1% 17.6% Sample Size = 1000 Eg 1: Matane 0-14: 2.9% of 1000 = 2.9 or 3 people. Eg 2: Rimouski 25-64: 50% of 1000 = 50 people.

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