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Math 120 - Intro to Statisticswith 100- correct answers
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Math 120 - Intro to Statisticswith 100- correct answers
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Math 120 - Intro to Statisticswith100% correct answers
Match each word or phrase - answer 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.
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
Match each word or phrase - answer 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
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
Number of pets - answer Is the variable qualitative or
quantitative?
The variable is
quantitative because it is
a numerical measure.
Time to swim 100 meters - answer Is the variable
qualitative or quantitative?
The variable is
quantitative
because it is
a
numerical
measure.
Number of beats in a song - answer Is the variable
qualitative or quantitative?
, The variable is
discrete
because it
is
countable.
Distance between sides of a street - answer Is the variable
qualitative or quantitative?
The variable is
continuous
because it
is not
countable.
The rankings of songs in the top 100 - answer ordinal
Dress color - answer nominal
Ages of children - answer Ratio
The data on the right relate to characteristics of high-
definition televisions A through E. Identify the individuals,
variables, and data corresponding to the variables.
Determine whether each variable is qualitative,
continuous, or discrete. - answer What are the individuals
being studied?
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