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Elementary Statistics
n/a
13
Mathematics
Undergraduate 3
09/20/2011

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Term
statistics
Definition
a group of methods used to collect, analyze, & interpret data
Term
Population
Definition
is the group of interest (the whole group)
Term
Sample
Definition
a selection of a few elements of the population used for the study
Term
Statistics
Definition
summary measures calculated from sample data (2nd definition)
Term
Parameters
Definition
summary measures calculated from population data
Term
Descriptive Statistics
Definition
group of methods used to describe, display, and organize data
Term
Inferential Statistics
Definition
methods that use sample results to make decisions about the population
Term
Representative Sample
Definition
a sample that has all (or almost all) of the population characteristics
Term
Random Sample
Definition
drawn in a way such that every member of the population has an equal chance of being selected
Term
Sampling With Replacement
Definition
each time an element is selected for the sample, it is put back into the population before the next element is selected
Term
Sample Without Replacement
Definition
each element that is selected does not get put back into the population before the next element is selected
Term
data set
Definition
is the whole set of data from a population or sample.
Term
variable
Definition
is the characteristic being studied that assumes a different value
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