BUAL 2600 Test 1 Auburn Questions
and Answers 2024/2025
Data
✓ Facts and figures from which conclusions can be drawn
Data set
✓ The data that are collected for a particular study
Elements
✓ May be people, objects, events, or other entries
Variable
✓ Any characteristic of an element
Quantitative
✓ The possible measurements of the values of a variable are numbers
that represent quantities
Qualitative (categorial)
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✓ The possible measurements fall into several categories
Quantitative Variables
✓ Numeric
✓
✓ How many and how much
✓
✓ Mathematical operations are meaningful.
Qualitative Variables
✓ Labels or names used to identify an attribute of each element
✓
✓ Either Numeric or Nonnumeric
✓
✓ Appropriate statistical analyses are rather limited
✓
✓ Categorical Variable
Cross-sectional data
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✓ Data collected at the same or approximately the same point in time
Time series data
✓ Data collected over different time periods
Census
✓ An examination of all the population measurements
Population
✓ A set of all elements about which we wish to draw conclusions
Sample
✓ A subset of elements of a population
Probability sampling
✓ Sampling where we know the chance that each element in the
population will be included in the sample
✓
✓ Required for statistical inference
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