A | B |
Obtain a list of patients discharged from all MMH facilities. Divide the patients according to length of hospital stay(2 days or less, 3-7 days, 8-14 days, more than 14 days). Draw random samples from each group. | Stratified |
Obtain lists of patients discharged from all MMH facilities. Number these patients, and then use a random-number table to obtain the sample. | Simple random |
Randomly select some MMH facilities from each of five geographic regions, and then include all the patients on the discharge lists of the selected hospitals. | Cluster |
Instruct each MMH facility to survey 10 discharged patients this week and send in the results. | Convenience |
Assign each business in the Island Business Directory a number, and then use a random-number table to select the business to be included in the sample. | Simple random |
Use the postal ZIP Coldes to divide the state into regions. Pick a random sample of 10 ZIP Code areas and then include all the businesses in each selected ZIP Code area. | Cluster |
Send a team of five research assistants to Bishop Street in downtown Honolulu. Let each assistant select a block or building and interview an employee from each business found. Each resercher can have the rest of the day off after getting responses from 20 different businesses. | Convience |
Use the Island Business Directory. Number all the businesses. Select a starting place at random, and then use every 50th business listed until you have 100 businesses. | Systematic |
Group the businesses according to type: medical, shipping, retail, manufacturing, financial, construction, restaurant, hotel, tourism, other. Then select a random sample of 10 businesses from each business type. | Stratified |
At the beginning of the year, instruct each MMH facility to survey every 500th patient discharged. | Systematic |