NR449 QUIZ 4 LATEST UPDATE VERIFIED
QUESTIONS & DETAILED EXPLANATIONS GRADED
A+ ( 2026-2027) BRANDNEW UPLOADED LATEST
VERSION
QUESTION
What is a sampling strategy?
A) The overall approach used to select a subset of individuals (a sample) from a larger
group (the population) to study
B) The overall approach used to select the entire population to study
C) The overall approach used to select a single individual to study
D) The overall approach used to select a treatment to study
Correct Answer: A
Rationale: A sampling strategy is the overall approach used to select a subset of
individuals (a sample) from a larger group (the population) to study.
QUESTION
What is a population?
A) The entire group of individuals that the researcher is interested in generalizing the
findings to
B) A subgroup of the population selected to participate
C) The difference between the sample and the population
D) A list of all accessible individuals
Correct Answer: A
Rationale: A population is the entire group of individuals that the researcher is interested
in generalizing the findings to.
QUESTION
What is a sample?
A) A subgroup of the population that is selected to participate in the research study
B) The entire group of individuals that the researcher is interested in
C) The difference between the sample and the population
D) A list of all accessible individuals
Correct Answer: A
,Rationale: A sample is a subgroup of the population that is selected to participate in the
research study.
QUESTION
What is sampling error?
A) The difference between the characteristics of the sample and the characteristics of the
population from which it was drawn
B) The difference between the sample and the treatment
C) The difference between the population and the treatment
D) The difference between the sample and the researcher
Correct Answer: A
Rationale: Sampling error is the difference between the characteristics of the sample and
the characteristics of the population from which it was drawn.
QUESTION
What is qualitative research sampling?
A) Focuses on in-depth understanding and often uses purposeful selection of participants
who can best inform the research question
B) Aims for generalizability and often uses probability sampling methods
C) Focuses on statistical power and sample size
D) Aims for random selection of participants
Correct Answer: A
Rationale: Qualitative research sampling focuses on in-depth understanding and often
uses purposeful selection of participants who can best inform the research question.
QUESTION
What is quantitative research sampling?
A) Aims for generalizability and often uses probability (random) sampling methods to
ensure each member of the population has a known chance of being selected
B) Focuses on in-depth understanding and purposeful selection
C) Focuses on data saturation and redundancy
D) Aims for non-representative samples
Correct Answer: A
Rationale: Quantitative research sampling aims for generalizability and often uses
probability (random) sampling methods to ensure each member of the population has a
known chance of being selected.
QUESTION
What is selection bias?
A) Occurs when the process used to select participants or assign them to groups is not
,impartial, leading to a sample that is not representative of the population and threatening
the study's validity
B) Occurs when the process used to select participants is impartial
C) Occurs when the sample is representative of the population
D) Occurs when the sample is randomly selected
Correct Answer: A
Rationale: Selection bias occurs when the process used to select participants or assign
them to groups is not impartial, leading to a sample that is not representative of the
population and threatening the study's validity.
QUESTION
What is random sampling?
A) A method where every member of the available population has an equal and
independent chance of being selected for the sample
B) A method where only some members have a chance of being selected
C) A method where members are selected based on availability
D) A method where members are selected based on specific characteristics
Correct Answer: A
Rationale: Random sampling is a method where every member of the available population
has an equal and independent chance of being selected for the sample.
QUESTION
What is random assignment?
A) A procedure used in experimental designs where participants are randomly assigned to
different treatment groups to control for confounding variables
B) A procedure used to randomly select participants from the population
C) A procedure used to randomly select the sample size
D) A procedure used to randomly select the research question
Correct Answer: A
Rationale: Random assignment is a procedure used in experimental designs where
participants are randomly assigned to different treatment groups to control for confounding
variables.
QUESTION
What is a sampling frame?
A) A list of all the individuals within the population who are accessible to the researcher
B) A list of all the individuals within the population who are not accessible
C) A list of all the individuals within the sample
D) A list of all the individuals within the treatment group
, Correct Answer: A
Rationale: A sampling frame is a list of all the individuals within the population who are
accessible to the researcher.
QUESTION
What are inclusion criteria?
A) Characteristics that individuals must possess to be eligible for participation in a study
B) Characteristics that disqualify individuals from participating in a study
C) Characteristics that are irrelevant to the study
D) Characteristics that are only relevant to the researcher
Correct Answer: A
Rationale: Inclusion criteria are characteristics that individuals must possess to be eligible
for participation in a study.
QUESTION
What are exclusion criteria?
A) Characteristics that disqualify individuals from participating in a study
B) Characteristics that individuals must possess to be eligible for participation
C) Characteristics that are irrelevant to the study
D) Characteristics that are only relevant to the researcher
Correct Answer: A
Rationale: Exclusion criteria are characteristics that disqualify individuals from
participating in a study.
QUESTION
What is purposeful sampling?
A) A non-probability sampling technique used in qualitative research where participants
are selected based on specific characteristics relevant to the research question
B) A probability sampling technique used in quantitative research
C) A sampling technique where participants are selected based on availability
D) A sampling technique where participants are selected randomly
Correct Answer: A
Rationale: Purposeful sampling is a non-probability sampling technique used in qualitative
research where participants are selected based on specific characteristics relevant to the
research question.
QUESTION
What is probability sampling (random sampling)?
A) Sampling techniques used in quantitative research where every member of the
population has a known and non-zero chance of being selected
QUESTIONS & DETAILED EXPLANATIONS GRADED
A+ ( 2026-2027) BRANDNEW UPLOADED LATEST
VERSION
QUESTION
What is a sampling strategy?
A) The overall approach used to select a subset of individuals (a sample) from a larger
group (the population) to study
B) The overall approach used to select the entire population to study
C) The overall approach used to select a single individual to study
D) The overall approach used to select a treatment to study
Correct Answer: A
Rationale: A sampling strategy is the overall approach used to select a subset of
individuals (a sample) from a larger group (the population) to study.
QUESTION
What is a population?
A) The entire group of individuals that the researcher is interested in generalizing the
findings to
B) A subgroup of the population selected to participate
C) The difference between the sample and the population
D) A list of all accessible individuals
Correct Answer: A
Rationale: A population is the entire group of individuals that the researcher is interested
in generalizing the findings to.
QUESTION
What is a sample?
A) A subgroup of the population that is selected to participate in the research study
B) The entire group of individuals that the researcher is interested in
C) The difference between the sample and the population
D) A list of all accessible individuals
Correct Answer: A
,Rationale: A sample is a subgroup of the population that is selected to participate in the
research study.
QUESTION
What is sampling error?
A) The difference between the characteristics of the sample and the characteristics of the
population from which it was drawn
B) The difference between the sample and the treatment
C) The difference between the population and the treatment
D) The difference between the sample and the researcher
Correct Answer: A
Rationale: Sampling error is the difference between the characteristics of the sample and
the characteristics of the population from which it was drawn.
QUESTION
What is qualitative research sampling?
A) Focuses on in-depth understanding and often uses purposeful selection of participants
who can best inform the research question
B) Aims for generalizability and often uses probability sampling methods
C) Focuses on statistical power and sample size
D) Aims for random selection of participants
Correct Answer: A
Rationale: Qualitative research sampling focuses on in-depth understanding and often
uses purposeful selection of participants who can best inform the research question.
QUESTION
What is quantitative research sampling?
A) Aims for generalizability and often uses probability (random) sampling methods to
ensure each member of the population has a known chance of being selected
B) Focuses on in-depth understanding and purposeful selection
C) Focuses on data saturation and redundancy
D) Aims for non-representative samples
Correct Answer: A
Rationale: Quantitative research sampling aims for generalizability and often uses
probability (random) sampling methods to ensure each member of the population has a
known chance of being selected.
QUESTION
What is selection bias?
A) Occurs when the process used to select participants or assign them to groups is not
,impartial, leading to a sample that is not representative of the population and threatening
the study's validity
B) Occurs when the process used to select participants is impartial
C) Occurs when the sample is representative of the population
D) Occurs when the sample is randomly selected
Correct Answer: A
Rationale: Selection bias occurs when the process used to select participants or assign
them to groups is not impartial, leading to a sample that is not representative of the
population and threatening the study's validity.
QUESTION
What is random sampling?
A) A method where every member of the available population has an equal and
independent chance of being selected for the sample
B) A method where only some members have a chance of being selected
C) A method where members are selected based on availability
D) A method where members are selected based on specific characteristics
Correct Answer: A
Rationale: Random sampling is a method where every member of the available population
has an equal and independent chance of being selected for the sample.
QUESTION
What is random assignment?
A) A procedure used in experimental designs where participants are randomly assigned to
different treatment groups to control for confounding variables
B) A procedure used to randomly select participants from the population
C) A procedure used to randomly select the sample size
D) A procedure used to randomly select the research question
Correct Answer: A
Rationale: Random assignment is a procedure used in experimental designs where
participants are randomly assigned to different treatment groups to control for confounding
variables.
QUESTION
What is a sampling frame?
A) A list of all the individuals within the population who are accessible to the researcher
B) A list of all the individuals within the population who are not accessible
C) A list of all the individuals within the sample
D) A list of all the individuals within the treatment group
, Correct Answer: A
Rationale: A sampling frame is a list of all the individuals within the population who are
accessible to the researcher.
QUESTION
What are inclusion criteria?
A) Characteristics that individuals must possess to be eligible for participation in a study
B) Characteristics that disqualify individuals from participating in a study
C) Characteristics that are irrelevant to the study
D) Characteristics that are only relevant to the researcher
Correct Answer: A
Rationale: Inclusion criteria are characteristics that individuals must possess to be eligible
for participation in a study.
QUESTION
What are exclusion criteria?
A) Characteristics that disqualify individuals from participating in a study
B) Characteristics that individuals must possess to be eligible for participation
C) Characteristics that are irrelevant to the study
D) Characteristics that are only relevant to the researcher
Correct Answer: A
Rationale: Exclusion criteria are characteristics that disqualify individuals from
participating in a study.
QUESTION
What is purposeful sampling?
A) A non-probability sampling technique used in qualitative research where participants
are selected based on specific characteristics relevant to the research question
B) A probability sampling technique used in quantitative research
C) A sampling technique where participants are selected based on availability
D) A sampling technique where participants are selected randomly
Correct Answer: A
Rationale: Purposeful sampling is a non-probability sampling technique used in qualitative
research where participants are selected based on specific characteristics relevant to the
research question.
QUESTION
What is probability sampling (random sampling)?
A) Sampling techniques used in quantitative research where every member of the
population has a known and non-zero chance of being selected
