WGU C784 -
APPLIED
HEALTHCARE
STATISTICS EXAM
TEST QUESTIONS
,When one variable causes change in another, we call
the first variable the ___________________
variable*.
The affected variable is called the _______________
variable*. - CORRECT ANSWER-When one
variable causes change in another, we call the first
variable the explanatory variable*.
The affected variable is called the response
variable*.
In a randomized experiment, the researcher
manipulates values of the explanatory variable and
measures the resulting changes in the response
variable. The different values of the explanatory
,variable are called treatments. An experimental unit
is a single object or individual to be measured.
A two-way table, also known as a two-way
frequency table or contingency table, is used to show
the relationship between two
______________________variables ( C→C ); the
rows show the categories of one variable, and the
columns show the categories of the other variable. -
CORRECT ANSWER-categorical variables ( C→C
)
______________________. These represent the
total number of instances that fall in both the
corresponding row and header.
The data in the green cells show
_______________________________. These are
equal to the sum of the number of individuals in the
corresponding row or column. - CORRECT
ANSWER-The cells in yellow show joint
frequencies*. These represent the total number of
, instances that fall in both the corresponding row and
header.
For example, data in the "Male" row and "With
Autism" column counts the number of males with
autism.
Quantitative
Which variable, explanatory or response, is
displayed on the x -axis on side-by-side boxplots? -
CORRECT ANSWER-Side-by-side boxplots can be
horizontal or vertical, so either variable (explanatory
or response) can be displayed on the x -axis.
A scatterplot is a good choice to display two-variable
data that are both __________ variables. - CO What
determines the location of a dot on a scatterplot? -
APPLIED
HEALTHCARE
STATISTICS EXAM
TEST QUESTIONS
,When one variable causes change in another, we call
the first variable the ___________________
variable*.
The affected variable is called the _______________
variable*. - CORRECT ANSWER-When one
variable causes change in another, we call the first
variable the explanatory variable*.
The affected variable is called the response
variable*.
In a randomized experiment, the researcher
manipulates values of the explanatory variable and
measures the resulting changes in the response
variable. The different values of the explanatory
,variable are called treatments. An experimental unit
is a single object or individual to be measured.
A two-way table, also known as a two-way
frequency table or contingency table, is used to show
the relationship between two
______________________variables ( C→C ); the
rows show the categories of one variable, and the
columns show the categories of the other variable. -
CORRECT ANSWER-categorical variables ( C→C
)
______________________. These represent the
total number of instances that fall in both the
corresponding row and header.
The data in the green cells show
_______________________________. These are
equal to the sum of the number of individuals in the
corresponding row or column. - CORRECT
ANSWER-The cells in yellow show joint
frequencies*. These represent the total number of
, instances that fall in both the corresponding row and
header.
For example, data in the "Male" row and "With
Autism" column counts the number of males with
autism.
Quantitative
Which variable, explanatory or response, is
displayed on the x -axis on side-by-side boxplots? -
CORRECT ANSWER-Side-by-side boxplots can be
horizontal or vertical, so either variable (explanatory
or response) can be displayed on the x -axis.
A scatterplot is a good choice to display two-variable
data that are both __________ variables. - CO What
determines the location of a dot on a scatterplot? -
