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Math 120 - Intro to Statistics _ Exam 2024 With Correct Answers_.pdf
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9/4/24, 2:58 PMMath 120 - Intro to Statistics
Jeremiah
Terms in this set (60)
A numerical summary of a sample.
Statistic.
Organizing and summarizing data through tables, graphs, and numerical summaries.
Descriptive Statistics.
The science of collecting, organizing, summarizing, and analyzing information to draw
conclusions or answer questions. It is also about providing a measure of confidence in
any conclusions.
Statistics.
A subset of the group of individuals that is being studied.
Sample.
Match each word or phrase
Uses methods that take results from a sample and extends them to the population, and
measures the reliability of the result.
Inferential Statistics
A person or object that is a member of the group being studied.
Individual
A numerical summary of a population.
Parameter.
The entire group of individuals to be studied.
Population
Provide numerical measures of individuals. The measures can be added or subtracted,
and provide meaningful results.
Quantitative Variable
Allow for classification of individuals based on some attribute or characteristic.
Qualitative Variable
The characteristics of the individuals within the population.
Variable
Match each word or phrase
Information that describes characteristics of an individual.
Data
Has either a finite number of possible values or countable number of possible values.
The values of these variables typically result from counting.
Discrete Variable
Has an infinite number of possible values that are not countable. The values of these
variables typically result from measurement.
Continuous Variable
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, 9/4/24, 2:58 PM
Is the variable qualitative or quantitative?
Number of pets The variable is
quantitative because it is
a numerical measure.
Is the variable qualitative or quantitative?
The variable is
quantitative
Time to swim 100 meters
because it is
a
numerical
measure.
Is the variable qualitative or quantitative?
The variable is
Number of beats in a song discrete
because it
is
countable.
Is the variable qualitative or quantitative?
The variable is
Distance between sides of a street continuous
because it
is not
countable.
The rankings of songs in the top 100 ordinal
Dress color nominal
Ages of children Ratio
What are the individuals being studied?
(A) The high-definition television setups A through E.
What are the variables and their corresponding data being studied?
(A) Size (42, 54, 40, 40, 44), screen type
The data on the right relate to characteristics
(Projection, Plasma, Plasma, Projection, Plasma),
of high-definition televisions A through E.
and number of channels available
Identify the individuals, variables, and data
(300, 107, 423, 270, 290)
corresponding to the variables. Determine
whether each variable is qualitative,
Determine whether each variable is qualitative, continuous, or discrete.
continuous, or discrete.
Size is a continuous variable.
Screen type is a qualitative variable.
Number of channels available
is a discrete variable.
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