1 / 6

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.

skyla
Télécharger la présentation

Stratified Sampling

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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.

More Related