QUANTITATIVE RESEARCH TECHNIQUES
AND STATISTICS PEREGRINE EXAM 2026
QUESTIONS WITH CORRECT DETAILED
ANSWERS AND RATIONALES VERIFIED
⩥ Significance level. Answer: Measures the reliability of a statistical
inference
⩥ inferential statistics. Answer: Process of using sample statistics
(mathematics) to draw conclusions about population parameters
⩥ mutually exclusive. Answer: Events that cannot occur at the same
time.
⩥ sampling error. Answer: the difference between the results of random
samples taken at the same time
⩥ non-sampling error. Answer: occurs when the sample data are
incorrectly collected, recorded, or analyzed. Three types of errors: data
acquisition errors, non-response errors (or bias), selection bias
⩥ Design of a good survey components. Answer: short survey,
short/simple questions, start with demographic questions, ues
dichtomous (yes-no) and multiple choice
, ⩥ Direct observation. Answer: example: counts backpacks on campus
for a day
⩥ stratified random sample. Answer: a sample from selected subgroups
of the target population in which everyone in those subgroups has an
equal chance of being included in the research
example: The manager of a customer service division wants to know if
the customers in the past 12 months are satisfied with their purchase of
CD's. There are four types of CD's.
⩥ Joint Probability. Answer: the probability of the intersection of two
events
⩥ Union of two events. Answer: The union of events A and B is the
event containing all sample points that are in A or B or both
⩥ Marginal Probability. Answer: the probability of a single event
without consideration of any other event
⩥ Conditional Probability. Answer: the likelihood that a target behavior
will occur in a given circumstance
AND STATISTICS PEREGRINE EXAM 2026
QUESTIONS WITH CORRECT DETAILED
ANSWERS AND RATIONALES VERIFIED
⩥ Significance level. Answer: Measures the reliability of a statistical
inference
⩥ inferential statistics. Answer: Process of using sample statistics
(mathematics) to draw conclusions about population parameters
⩥ mutually exclusive. Answer: Events that cannot occur at the same
time.
⩥ sampling error. Answer: the difference between the results of random
samples taken at the same time
⩥ non-sampling error. Answer: occurs when the sample data are
incorrectly collected, recorded, or analyzed. Three types of errors: data
acquisition errors, non-response errors (or bias), selection bias
⩥ Design of a good survey components. Answer: short survey,
short/simple questions, start with demographic questions, ues
dichtomous (yes-no) and multiple choice
, ⩥ Direct observation. Answer: example: counts backpacks on campus
for a day
⩥ stratified random sample. Answer: a sample from selected subgroups
of the target population in which everyone in those subgroups has an
equal chance of being included in the research
example: The manager of a customer service division wants to know if
the customers in the past 12 months are satisfied with their purchase of
CD's. There are four types of CD's.
⩥ Joint Probability. Answer: the probability of the intersection of two
events
⩥ Union of two events. Answer: The union of events A and B is the
event containing all sample points that are in A or B or both
⩥ Marginal Probability. Answer: the probability of a single event
without consideration of any other event
⩥ Conditional Probability. Answer: the likelihood that a target behavior
will occur in a given circumstance
