BUAL EXAM ONE QUESTIONS AND
CORRECT ANSWERS
Data - Answer-facts and figures from which conclusions can be drawn
Data Set - Answer-the data that are collected for a particular study
EX. maybe people, objects, events, or other entries
Variable - Answer-any characteristic of an element
Quantitative - Answer-he possible measurements of the values of a variable are numbers that represent
quantities
-Numerical
-How many and how much
Qualitative (categorical) - Answer-the possible measurements fall into several categories: categorical
o Weight of a package
o Size
o Time
Cross-sectional data - Answer-data collected at the same or approximately the same point in time
, Time series data - Answer-data collected over different time periods
Population - Answer-a set of all elements about which we wish to draw conclusions
Sample - Answer-a subset of the elements of a population
Sample size - Answer-..
probability sampling - Answer-sampling where we know the chance that each element in the population
will be included in the sample
§ Required for statistical inference
§ Cluster
§ Systematic
§ Stratified
non-probability sampling - Answer-sampling where we select elements because they are convenient to
sample
Convenience sampling - Answer-sampling where we select elements because they are convenient to
sample
Voluntary sampling - Answer-samples in which participants self-select
Judgement sampling - Answer-samples in which a person who is extremely knowledgeable about the
population selects population elements he or she feels are most representative
CORRECT ANSWERS
Data - Answer-facts and figures from which conclusions can be drawn
Data Set - Answer-the data that are collected for a particular study
EX. maybe people, objects, events, or other entries
Variable - Answer-any characteristic of an element
Quantitative - Answer-he possible measurements of the values of a variable are numbers that represent
quantities
-Numerical
-How many and how much
Qualitative (categorical) - Answer-the possible measurements fall into several categories: categorical
o Weight of a package
o Size
o Time
Cross-sectional data - Answer-data collected at the same or approximately the same point in time
, Time series data - Answer-data collected over different time periods
Population - Answer-a set of all elements about which we wish to draw conclusions
Sample - Answer-a subset of the elements of a population
Sample size - Answer-..
probability sampling - Answer-sampling where we know the chance that each element in the population
will be included in the sample
§ Required for statistical inference
§ Cluster
§ Systematic
§ Stratified
non-probability sampling - Answer-sampling where we select elements because they are convenient to
sample
Convenience sampling - Answer-sampling where we select elements because they are convenient to
sample
Voluntary sampling - Answer-samples in which participants self-select
Judgement sampling - Answer-samples in which a person who is extremely knowledgeable about the
population selects population elements he or she feels are most representative
