Suppose a public health official wants to estimate the true proportion of Wisconsin residents who were diagnosed with influenza in the last year. The public health official randomly selects 2000 medical records of people who visited their doctor
in the last year. She records whether a diagnosis of influenza appears in the medical record. The public health official then
computes the proportion of people diagnosed with influenza among these 2000 individuals.
Classify each description as one of a parameter, variable, population, sample, data, or statistic. Each classification has
one description
Parameter
Variable
Population
Sample
Data
Statistic
the proportion of
Wisconsin
residents in the
health official's
sample who were
diagnosed with
influenza
a quantity equal to
one or zero,
depending on
whether a
randomly selected
person was
diagnosed with
influenza
all of the residents
of Wisconsin
the 2000
individuals whose
medical records
the health official
selected
the proportion of
Wisconsin
residents
diagnosed with
influenza
the 2000
observations
collected on
Wisconsin
residents
indicating the
presence or
absence of
influenza
diagnosis
Answer Bank
Incorrect