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Stratified Sampling Methodology for Heterogeneous Group Analysis

This guide details the process of stratified sampling to ensure equitable representation among heterogeneous groups. It provides a step-by-step approach, beginning with the identification of total populations across various demographic segments, calculating their percentages, and then determining appropriate sample sizes. Example calculations for different age groups in Matane and Rimouski illustrate how to apply this methodology effectively. By following these steps, researchers can obtain balanced data that accurately reflects the diversity of the populations being studied.

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Stratified Sampling Methodology for Heterogeneous Group Analysis

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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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