1. What does sampling in research mean?

A:  A process of selecting participants for a research project
B:  A portion of the elements in a population
C:  Assigning participants to various roles in a project
D:  All the above

2. What is meant by a sampling error?

A:  When you fail to get information for your research
B:  When a portion of the population fails to participate in research
C:  The extent to which a sample statistic incorrectly estimates a population parameter.
D:  The accuracy in research finding

3:  A sample frame is…

A:  A portion of the elements in a population
B:  A concrete listing of all the elements in a population
C:  A value associated with a population
D:  A concrete listing of some elements in a population

4:   Random selection is…

A:  A technique that provides each population element an equal opportunity of being 
      includes in the sample. 
B:  Is when you select elements on the basis of categories assumed to exist within a 
      population.
C:  Selection based on the availability or ease of inclusion
D:  Any procedure in which elements have unequal chances of being included into the 
      sample.

5:  Which of the one of the following best describes probability sampling.

A:  When all elements in a population are included in a sample
B:   When a portion of the sample is included in a sample.
C:   When hierarchical groups are selected from a sample frame.
D:   Random sampling

6:  Which one of the following is not a non-probability sampling method.

A: Accidental sampling
B:  Quota sampling
C:  Purposive sampling
D:  Cluster sampling

7:  What is the main distinction between probability and non- probability sampling?

A:  In probability sampling, sample error can be estimated.
B:  In non-probability sample, sample error can be estimated.
C:  Probability sampling has no sample error
D:  Non of the above is true

8:   When do we use cluster sampling in research?

A:  When doing non-probability sampling.
B:  Whenever a list of the entire frame does not exist
C:  When there are cyclic changes that repeat throughout the sample frame
D:  Whenever we want to include all subgroups into our sample.

9:   What is meant by confidence level in research?

A:  The probability associated with sampling error in a population
B:  The probability associated with the accuracy of an inferential statistics
C:  The probability to which a sample statistic incorrectly estimates a population
      parameter.
D:  The probability associated with confidence interval in a population

10:  The primary goal of any sampling procedure is to obtain a representative 
        sample. What does this mean?

A:  A sample that includes all the elements in a population
B:  A sample that follows all the sampling procedures
C:  A sample that resembles the population within an acceptable error.
D:  A sample that avoids accidental sampling.