Chapter 12: Practical Considerations Regarding Sample Surveying

Question 1

What are the elements included in the planning procedure

Answer 1

• purpose of the survey
• description of the population

Question 2

What are the elements included in the data collection

Answer 2

• thoughts about the measuring procedures
• methods of obtaining/collecting data

Question 3

What are the elements included in determining the sample size

Answer 3

• population mean
• population proportion

Question 4

What are the methods used in order to collect data

Answer 4

• Direct measurements
• Personal interview
• Telephone interview
• Questionnaire

Question 5

What are the factors influencing sample size

Answer 5

• Type of sample
• Accuracy of estimates
• Size of population
• Variance of measurements
• Costs and time

Question 6

What is a pilot survey

Answer 6

A pilot survey is a small survey whereby the sample chosen should be as representative as possible to provide information about the population

• Should be a miniature imitation of the major sample survey

Question 7

What are the uses of a pilot survey

Answer 7

• It helps to identify potential problems with data collection methods
• Used to gain information about the population before taking the sample

Question 8

What three sections are questionnaires usually divided into

Answer 8

• Identification
• Classification
• Information of interest

Question 9

What are the types of questions asked in a questionnaire

Answer 9

• Dichotomous questions (yes/no)
• Multiple choice
• Open ended
• Quantitative

Question 10

What is the sequence of questions asked in a questionnaire

Answer 10

• logical, easy
• difficult, short
• long questions

Question 11

What is the content of questions asked in the questionnaire

Answer 11

Unambiguous, simply stated, avoid leading questions

Question 12

Important points to take into account for questionnaires

Answer 12

Confidentiality of questionnaire
Testing of questionnaire
Fieldworkers
No response

Question 13

And unbiased estimator of an unknown population parameter is called efficient if

Answer 13

For a given sample size, it has the smallest standard error, or estimated standard error, among all other unbiased estimators