Sampling Techniques

Question 1

List of the elements in your population and from this your sample is drawn

Answer 1

SAMPLING FRAME

Question 2

Involves problems in your sampling, which reveals that your sample is not representative of your population

Answer 2

SAMPLING BIAS

Question 3

Plan you set forth to be sure that the sample you use in your research study represents the population from which you drew your sample

Answer 3

SAMPLING TECHNIQUE/SAMPLING STRATEGIES

Question 4

Advantage of Sampling Over Complete Enumeration

Answer 4

• Less Labor
• Reduced Cost
• Greater Speed
• Greater Scope
• Greater Efficiency and Accuracy
• Convenience
• Ethical Considerations

Question 5

Samples obtained using objective chance mechanism

Answer 5

PROBABILITY SAMPLES

Question 6

Samples are obtain haphazardly, selected purposively, or are taken as volunteers

Answer 6

NON-PROBABILITY SAMPLES

Question 7

Steps in Sampling Procedure

Answer 7

• Identify population
• Determine if population is accesible
• Select sampling method
• Choose a sample that is representative of the population
• Ask the question, “can I generalize to the general population from the accessible population?”

Question 8

Most basic method of drawing a probability sample

Answer 8

SIMPLE RANDOM SAMPLING

Question 9

Obtained by selecting every kth individual from the population

Answer 9

SYSTEMATIC RANDOM SAMPLING

Question 10

Obtained by separating the population into non-overlapping groups called strata and then obtaining a simple random sample from each stratum

Answer 10

STRATIFIED RANDOM SAMPLING

Question 11

Take the sample from naturally occuring groups in your population (heterogenous within cluster, homogenous among cluster)

Answer 11

CLUSTER SAMPLING

Question 12

Selection of sample is done in two or more steps or stages with sampling units varying in each stage

Answer 12

MULTI-STAGE SAMPLING

Question 13

Steps in Obtaining a Multi-Stage Sampling

Answer 13

1. Organizing the sampling process into stages where the unit of analysis is systematically grouped
2. Select a sampling technique for each stage
3. Systematically apply the sampling technique to each stage until the unit of analysis has been selected

Question 14

Basic Sampling Techniques of Non-Probability Sampling

Answer 14

• Accidental Sampling
• Quota Sampling
• Convenience Sampling
• Purposive Sampling
• Judgement Sampling

Question 15

Cases wherein Non-Probability Sampling is Useful

Answer 15

• Only few are willing to be interviewed
• Extreme difficulties in locating or identifying subjects
• Probability sampling is more expensive to implement
• Cannot enumerate the population

Question 16

Errors that result from the survey process

Answer 16

NON-SAMPLING ERROR

Question 17

Error that results from using sampling to estimate information regarding a population

Answer 17

SAMPLING ERROR

Question 18

Sources of Non-Sampling Error

Answer 18

• Non-responses
• Interview Error
• Misrepresented Answers
• Data entry errors
• Questionnaire Design
• Wording of Questions
• The order of the questions, words, and responses