Stat 1342 - Unit I Exam Review study
guide math
Statistics - correct answer-the science ofcollecting, organizing,summarizing, and analyzing
information to draw a conclusion and answer questions. Inaddition, statistics is about
providing a measure of confidence in any conclusions.
Explain the difference between a population and a sample - correct answer-A population is
the entire group that is being studied while a sample is a subset of the population that is
being studied
A(n) _________ is a person or object that is a member of the population being studied. -
correct answer-Individual
A(n) ________ is a numerical summary of a sample. - correct answer-statistic
A(n) _________ is a numerical summary of a population. - correct answer-parameter
_________ are the characteristics of the individuals of the population being studied. - correct
answer-variables
Determine whether the underlined value is a parameter or a statistic.
Upper A study of 6,076 adults in public rest rooms found that 23 % did not wash their hands
before exiting. - correct answer-The value is a parameter because the 6,076 adults in public
rest rooms are a population.
What is the population in the study?
What is the sample in the study?
A polling organization contacts 1029 adult men who are 40 to 60 years of age and live in the
United States and asks whether or not they had seen their family doctor within the past 6
months. - correct answer-Population is the Adult men who are 40 to 60 years of age and live
in the United States.
Sample is the 1029 adult men who are 40 to 60 years of age and live in the United States.
Determine whether the underlined numerical value is a parameter or a statistic. Explain your
reasoning.
In a phone survey of 100 random homes in a country, 21 % of families had garages. - correct
answer-Parameter because the data set of 100 random homes is a population.
Determine whether the variable is qualitative or quantitative.
, Hair color - correct answer-Qualitative because it is an attribute characteristic.
Determine whether the variable is qualitative or quantitative.
Favorite brand of computer - correct answer-The variable is qualitative because it is an
attribute characteristic.
Determine whether the variable is qualitative or quantitative.
Street name of address - correct answer-The variable is qualitative because it is an attribute
characteristic.
Determine whether the variable is qualitative or quantitative.
Amount of sugar in a bag - correct answer-The variable is quantitative because it is a
numerical measure
Determine whether the quantitative variable is discrete or continuous.
Number of bacteria seen on a microscope slide - correct answer-The variable is discrete
because it is countable
Determine whether the quantitative variable is discrete or continuous.
Number of notes in a song - correct answer-The variable is discrete because it is countable.
Determine whether the quantitative variable is discrete or continuous.
Running time of a film - correct answer-The variable is discrete because it is countable.
Determine whether the quantitative variable is discrete or continuous.
Number of days of rainfall in a city in one year - correct answer-The variable is discrete
because it is countable.
Determine the level of measurement of the variable.
Hair colors - correct answer-Nominal
Determine the level of measurement of the variable below.
Year of birth of college students - correct answer-Interval
Determine the level of measurement of the variable below.
Assessed value of a house - correct answer-Ordinal
Determine the level of measurement of the variable.
guide math
Statistics - correct answer-the science ofcollecting, organizing,summarizing, and analyzing
information to draw a conclusion and answer questions. Inaddition, statistics is about
providing a measure of confidence in any conclusions.
Explain the difference between a population and a sample - correct answer-A population is
the entire group that is being studied while a sample is a subset of the population that is
being studied
A(n) _________ is a person or object that is a member of the population being studied. -
correct answer-Individual
A(n) ________ is a numerical summary of a sample. - correct answer-statistic
A(n) _________ is a numerical summary of a population. - correct answer-parameter
_________ are the characteristics of the individuals of the population being studied. - correct
answer-variables
Determine whether the underlined value is a parameter or a statistic.
Upper A study of 6,076 adults in public rest rooms found that 23 % did not wash their hands
before exiting. - correct answer-The value is a parameter because the 6,076 adults in public
rest rooms are a population.
What is the population in the study?
What is the sample in the study?
A polling organization contacts 1029 adult men who are 40 to 60 years of age and live in the
United States and asks whether or not they had seen their family doctor within the past 6
months. - correct answer-Population is the Adult men who are 40 to 60 years of age and live
in the United States.
Sample is the 1029 adult men who are 40 to 60 years of age and live in the United States.
Determine whether the underlined numerical value is a parameter or a statistic. Explain your
reasoning.
In a phone survey of 100 random homes in a country, 21 % of families had garages. - correct
answer-Parameter because the data set of 100 random homes is a population.
Determine whether the variable is qualitative or quantitative.
, Hair color - correct answer-Qualitative because it is an attribute characteristic.
Determine whether the variable is qualitative or quantitative.
Favorite brand of computer - correct answer-The variable is qualitative because it is an
attribute characteristic.
Determine whether the variable is qualitative or quantitative.
Street name of address - correct answer-The variable is qualitative because it is an attribute
characteristic.
Determine whether the variable is qualitative or quantitative.
Amount of sugar in a bag - correct answer-The variable is quantitative because it is a
numerical measure
Determine whether the quantitative variable is discrete or continuous.
Number of bacteria seen on a microscope slide - correct answer-The variable is discrete
because it is countable
Determine whether the quantitative variable is discrete or continuous.
Number of notes in a song - correct answer-The variable is discrete because it is countable.
Determine whether the quantitative variable is discrete or continuous.
Running time of a film - correct answer-The variable is discrete because it is countable.
Determine whether the quantitative variable is discrete or continuous.
Number of days of rainfall in a city in one year - correct answer-The variable is discrete
because it is countable.
Determine the level of measurement of the variable.
Hair colors - correct answer-Nominal
Determine the level of measurement of the variable below.
Year of birth of college students - correct answer-Interval
Determine the level of measurement of the variable below.
Assessed value of a house - correct answer-Ordinal
Determine the level of measurement of the variable.
