Questions with 100% Correct Answers
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) - ✔✔The possible measurements fall into several
categories
Quantitative Variables - ✔✔Numeric
How many and how much
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,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 - ✔✔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
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©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
, Probability sampling - ✔✔Sampling where we know the chance that each
element in the population will be included in the sample
Required for statistical inference
Non-probability sampling - ✔✔Convenience sampling
Voluntary sampling
Judgement sampling
Convenience sampling - ✔✔Sampling where we select elements because
they are convenient to sample
Voluntary sampling - ✔✔Samples in which participants self-select
Frequently used by radio and television
Over represent people with strong opinions
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