In the following examples,
In the following examples,
distinguish between response
distinguish between response
and explanatory variables
and explanatory variables
•
Attitude toward abortion on demand
Attitude toward abortion on demand
(favor, oppose); Gender (male,female)
(favor, oppose); Gender (male,female)
•
Heart disease (yes, no); Cholesterol
Heart disease (yes, no); Cholesterol
level
level
•
Race (white, nonwhite); Gender(male,
Race (white, nonwhite); Gender(male,
female); vote for the President
female); vote for the President
(Republic, Democrat, Other); income
(Republic, Democrat, Other); income
•
Hospital (A, B); treatment(T1, T2),
Hospital (A, B); treatment(T1, T2),
Patient outcome (survive, die)
What scale of measurement is
What scale of measurement is
most appropriate for the
most appropriate for the
following variables
following variables
•
Political party affiliation (democrat, Political party affiliation (democrat, republican, other)republican, other)
•
Highest degree obtained ( none, high school, Highest degree obtained ( none, high school, bachelor’s, master’s, doctoratebachelor’s, master’s, doctorate
•
Patient condition (good, fair, serious, critical)Patient condition (good, fair, serious, critical)•
Patient survive (in numbers of months)Patient survive (in numbers of months)•
Location of hospital in which data collected Location of hospital in which data collected (London, Boston, Rochester)Describe a potential study that
Describe a potential study that
would have a categorical
would have a categorical
response variable
response variable
•
List variables that would be
List variables that would be
important in the study
important in the study
•
Distinguish between response and
Distinguish between response and
explanatory variables
explanatory variables
•
For each variable, identify the
For each variable, identify the
measurement scale
measurement scale
•
Indicate whether it would be treated
