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STT 200 Exam 1 Questions and Correct
Answers
Personal or Subjective Study Ans: the degree to which a given
individual believes that the event A will happen
Long Term Relative Frequency Ans: The proportion 'A' occurs if a
random experiment (circumstance) is reported many, many times
The Law of Large Numbers Ans: when observations of a
proportion are independent, the sample proportion approaches
the overall proportion as the number of observations gets larger
Raw Data Ans: Information that has been collected but has not yet
been processed
Categorical Ans: Variable places an individual or item into one of
several groups of categories, which are called levels
Numerical Ans: Variable takes on a wider ranger of numerical
values. Other names:
Measurement Variable
Quantitative Variable
Simple Random Sampling Ans: every member of the population
has an equal probability of being selected for the sample
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Stratified Sampling Ans: a variation of random sampling; the
population is divided into subgroups and weighted based on
demographic characteristics of the national population
Cluster Sampling Ans: A probability sampling technique in which
clusters of participants within the population of interest are
selected at random, followed by data collection from all
individuals in each cluster.
Systematic Sampling Ans: select some starting point and then
select every Kth element in the population
Selection Bias Ans: occurs if the method for selecting the
participants produces a sample that does not represent the
population of interest
Nonresponse Bias Ans: occurs when a representative sample is
chosen for survey, but a subject cannot be contacted or does not
respond
Response Bias Ans: occurs when participants respond differently
from how they truly feel. The way questions are worded, the way
interviewers behave. as well as many other factors might lead an
individual to provide false information
Sampling Bias Ans: occurs if the method for selecting the
participants causes some individuals in the populations to be
more or less likely to be included in the sample than others
Convenience Sample Ans: a form of nonprobability sample using
respondents who are convenient or readily accessible to the
researcher—for example, employees, friends, or relatives
Explanatory Variable Ans: a variable that we think explains or
causes changes in the response variable
© 2025 All rights reserved
STT 200 Exam 1 Questions and Correct
Answers
Personal or Subjective Study Ans: the degree to which a given
individual believes that the event A will happen
Long Term Relative Frequency Ans: The proportion 'A' occurs if a
random experiment (circumstance) is reported many, many times
The Law of Large Numbers Ans: when observations of a
proportion are independent, the sample proportion approaches
the overall proportion as the number of observations gets larger
Raw Data Ans: Information that has been collected but has not yet
been processed
Categorical Ans: Variable places an individual or item into one of
several groups of categories, which are called levels
Numerical Ans: Variable takes on a wider ranger of numerical
values. Other names:
Measurement Variable
Quantitative Variable
Simple Random Sampling Ans: every member of the population
has an equal probability of being selected for the sample
© 2025 All rights reserved
, 2 | Page
Stratified Sampling Ans: a variation of random sampling; the
population is divided into subgroups and weighted based on
demographic characteristics of the national population
Cluster Sampling Ans: A probability sampling technique in which
clusters of participants within the population of interest are
selected at random, followed by data collection from all
individuals in each cluster.
Systematic Sampling Ans: select some starting point and then
select every Kth element in the population
Selection Bias Ans: occurs if the method for selecting the
participants produces a sample that does not represent the
population of interest
Nonresponse Bias Ans: occurs when a representative sample is
chosen for survey, but a subject cannot be contacted or does not
respond
Response Bias Ans: occurs when participants respond differently
from how they truly feel. The way questions are worded, the way
interviewers behave. as well as many other factors might lead an
individual to provide false information
Sampling Bias Ans: occurs if the method for selecting the
participants causes some individuals in the populations to be
more or less likely to be included in the sample than others
Convenience Sample Ans: a form of nonprobability sample using
respondents who are convenient or readily accessible to the
researcher—for example, employees, friends, or relatives
Explanatory Variable Ans: a variable that we think explains or
causes changes in the response variable
© 2025 All rights reserved
