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This module provides students an opportunity to practice data sampling techniques. Students will demonstrate the simple random, systematic, stratified, and cluster sampling techniques, and explain the details of each procedure. This lab is based on one originally created by Carol Olmstead.
Class Time:
Names:
Student learning outcomes
- The student will demonstrate the simple random, systematic, stratified, and cluster sampling techniques.
- The student will explain each of the details of each procedure used.
In this lab, you will be asked to pick several random samples. In each case, describe your procedure briefly, including how you might have used the random number generator, and then list the restaurants in the sample you obtained
The following section contains restaurants stratified by city into columns and grouped horizontally by entree cost (clusters).
A simple random sample
Pick a simple random sample of 15 restaurants.
- Describe the procedure:
-
1. __________ 6. __________ 11. __________ 2. __________ 7. __________ 12. __________ 3. __________ 8. __________ 13. __________ 4. __________ 9. __________ 14. __________ 5. __________ 10. __________ 15. __________
A systematic sample
Pick a systematic sample of 15 restaurants.
- Describe the procedure:
-
1. __________ 6. __________ 11. __________ 2. __________ 7. __________ 12. __________ 3. __________ 8. __________ 13. __________ 4. __________ 9. __________ 14. __________ 5. __________ 10. __________ 15. __________
A stratified sample
Pick a stratified sample , by city, of 20 restaurants. Use 25% of the restaurants from each stratum. Round to the nearest whole number.
- Describe the procedure:
-
1. __________ 6. __________ 11. __________ 16. __________ 2. __________ 7. __________ 12. __________ 17. __________ 3. __________ 8. __________ 13. __________ 18. __________ 4. __________ 9. __________ 14. __________ 19. __________ 5. __________ 10. __________ 15. __________ 20. __________
A stratified sample
Pick a stratified sample , by entree cost, of 21 restaurants. Use 25% of the restaurants from each stratum. Round to the nearest whole number.
- Describe the procedure:
-
1. __________ 6. __________ 11. __________ 16. __________ 2. __________ 7. __________ 12. __________ 17. __________ 3. __________ 8. __________ 13. __________ 18. __________ 4. __________ 9. __________ 14. __________ 19. __________ 5. __________ 10. __________ 15. __________ 20. __________ 21. __________
A cluster sample
Pick a cluster sample of restaurants from two cities. The number of restaurants will vary.
- Describe the procedure:
-
1. __________ 6. __________ 11. __________ 16. __________ 21. __________ 2. __________ 7. __________ 12. __________ 17. __________ 22. __________ 3. __________ 8. __________ 13. __________ 18. __________ 23. __________ 4. __________ 9. __________ 14. __________ 19. __________ 24. __________ 5. __________ 10. __________ 15. __________ 20. __________ 25. __________
Restaurants stratified by city and entree cost
| Entree Cost → | Under $10 | $10 to under $15 | $15 to under $20 | Over $20 |
|---|---|---|---|---|
| San Jose | El Abuelo Taq, Pasta Mia, Emma's Express, Bamboo Hut | Emperor's Guard, Creekside Inn | Agenda, Gervais, Miro's | Blake's, Eulipia, Hayes Mansion, Germania |
| Palo Alto | Senor Taco, Olive Garden, Taxi's | Ming's, P.A. Joe's, Stickney's | Scott's Seafood, Poolside Grill, Fish Market | Sundance Mine, Maddalena's, Spago's |
| Los Gatos | Mary's Patio, Mount Everest, Sweet Pea's, Andele Taqueria | Lindsey's, Willow Street | Toll House | Charter House, La Maison Du Cafe |
| Mountain View | Maharaja, New Ma's, Thai-Rific, Garden Fresh | Amber Indian, La Fiesta, Fiesta del Mar, Dawit | Austin's, Shiva's, Mazeh | Le Petit Bistro |
| Cupertino | Hobees, Hung Fu, Samrat, Panda Express | Santa Barb. Grill, Mand. Gourmet, Bombay Oven, Kathmandu West | Fontana's, Blue Pheasant | Hamasushi, Helios |
| Sunnyvale | Chekijababi, Taj India, Full Throttle, Tia Juana, Lemon Grass | Pacific Fresh, Charley Brown's, Cafe Cameroon, Faz, Aruba's | Lion&Compass, The Palace, Beau Sejour | |
| Santa Clara | Rangoli, Armadillo Willy's, Thai Pepper, Pasand | Arthur's, Katie's Cafe, Pedro's, La Galleria | Birk's, Truya Sushi, Valley Plaza | Lakeside, Mariani's |
The original lab was designed and contributed by Carol Olmstead.
Read also:
OpenStax, Collaborative statistics using spreadsheets. OpenStax CNX. Jan 05, 2016 Download for free at http://legacy.cnx.org/content/col11521/1.23
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