3/31/2008
1
Intro to Statistics and
Frequency Distributions
Finite Mathematics
Section 10.1
Definitions
z
Statistics
:A collection of methods for planning
experiments; obtaining data; organizing,
summarizing, presenting, analyzing, and
interpreting the data; and drawing conclusions.
z
Descriptive Statistics: The collection
Descriptive Statistics
: The collection,
organization, analysis, summarization, and
presentation of data.
z
Inferential Statistics:
Generalizing from samples
to populations using probabilities; performing
hypothesis testing, determining relationships
between variables, and making predictions.
Definitions, Continued
z
Population vs. Sample:
A population
includes all objects of interest whereas a sample
is
only a portion of the population.
z
Parameters
are associated with populations and
statistics with samples Parameters are usually
statistics
with samples. Parameters are usually
denoted using Greek letters (μ and
σ
) while
statistics are usually denoted using Roman letters
(x, s).
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 Spring '08
 PamelaSatterfield
 Statistics, Frequency, Frequency distribution, Histogram, relative frequency, relative frequency histogram

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