Math 120 - Intro to Statistics question with answers
Match each word or phrase - -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 - -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 - -Is the variable qualitative or quantitative?
The variable is
quantitative because it is
a numerical measure.
-Time to swim 100 meters - -Is the variable qualitative or quantitative?
The variable is
quantitative
because it is
a
numerical
measure.
-Number of beats in a song - -Is the variable qualitative or quantitative?
The variable is
discrete
because it
is
countable.
-Distance between sides of a street - -Is the variable qualitative or quantitative?
The variable is
continuous
because it
is not
countable.
-The rankings of songs in the top 100 - -ordinal
-Dress color - -nominal
-Ages of children - -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. - -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
(Projection, Plasma, Plasma, Projection, Plasma),
and number of channels available
Match each word or phrase - -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 - -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 - -Is the variable qualitative or quantitative?
The variable is
quantitative because it is
a numerical measure.
-Time to swim 100 meters - -Is the variable qualitative or quantitative?
The variable is
quantitative
because it is
a
numerical
measure.
-Number of beats in a song - -Is the variable qualitative or quantitative?
The variable is
discrete
because it
is
countable.
-Distance between sides of a street - -Is the variable qualitative or quantitative?
The variable is
continuous
because it
is not
countable.
-The rankings of songs in the top 100 - -ordinal
-Dress color - -nominal
-Ages of children - -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. - -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
(Projection, Plasma, Plasma, Projection, Plasma),
and number of channels available
