Chapter 6 Vocab

Question 1

Sampling

Answer 1

Selection of a small number of elements from a larger defined target group of elements and expecting that the information gathered from the small group will allow judgements to be made about the larger group.

Question 2

Sampling Error

Answer 2

Any type of bias that is attributable to mistakes in either drawing a sample or determining the sample size.

Question 3

Non Sampling Error

Answer 3

Is bias that occurs in a research study regardless of whether a sample or census is used, such as bias caused by measurement error, response errors, or coding errors.

Question 4

Probability Sampling

Answer 4

Each sampling unit has known probability of being included in the sample (unbiased selection, proper representation of the target population).

Question 5

NonProbability Sampling

Answer 5

Probability of selecting each sampling unit is unknown, don’t know the sampling error.

Question 6

Simple Random Sampling

Answer 6

Every sampling unit in defined target population has known equal change of being selected.

Question 7

Systematic Random Sampling

Answer 7

List of sample, put in some order, select units according to skip interval.

Question 8

Stratified Random Sampling (Cluster Sampling)

Answer 8

Divide population into groups, then sample from each group.

Question 9

NonProbability Sampling Methods

Answer 9

Convenience Sampling
Judgement Sampling
Quota Sampling
Snowball Sampling

Question 10

Convenience Sampling

Answer 10

Relies upon convenience and access.

Question 11

Judgement Sampling

Answer 11

Relies upon belief that participants fit characteristics.

Question 12

Quota Sampling

Answer 12

Emphasizes representation of specific characteristics.

Question 13

Snowball Sampling

Answer 13

Relies on respondent referrals of others with like characteristics.

Question 14

Factors to Consider in Sample Design

Answer 14

Research Objectives
Resources
Knowledge of Target Population
Stat. Analysis Needs
Degree of Accuracy
Time Frame
Research Scope

Question 15

Factors that Affect Sample Size for Probability Designs

Answer 15

Variability of Population
Level of Confidence Desired
Degree of Precision in Estimating The Population Characteristic

Question 16

What are the 7 Steps in a Sampling Plan?

Answer 16

1. Define Target Population
2. Select Data Collection Method
3. Identify Sampling Frame
4. Identify Appropriate Sampling Method
5. Determine Sample Sizes and Contact Rates
6. Create Plan for Selecting Sampling Units
7. Execute Operational Plan