WGU C784-Statistics Mod 5 written solution
When one variable causes change in another, we call the first variable the
___________________ variable*.
The affected variable is called the _______________ variable*. - >>>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. - >>>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. - >>>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.
WGU C784-Statistics Mod 5 written solution
, The data in the green cells show marginal frequencies*. These are equal to the sum
of the number of individuals in the corresponding row or column. For example, data
in the "Totals" column and "Female" row shows the total number of females in the
study. It may be helpful to remember that marginal frequencies appear in the
margins of the table.
The bottom, right cell (in both the "Totals" column and the "Totals" row) measures
the total number of individuals in the study.
The relationship between two variables that are both quantitative can be displayed
in a
__________________________. - >>>scatterplot;
As we've seen earlier, every point on a coordinate plane can be represented by an
ordered pair*, ( x , y ). Here, the x -value is typically the _________________variable's
value for a piece of data, and the y value is the corresponding value for the
________________________variable. A simple way to remember this fact is that the
term "explanatory" has an " x " in it. - >>>explanatory variable; response variable
Side-by-side box plots are a good choice for two-variable data where the
explanatory variable is
____________ data and the response variable is ____________ data. - >>>Categorical
Quantitative
Which variable, explanatory or response, is displayed on the x -axis on side-by-side
boxplots? - >>>Sideby-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. - >>>Quantitative
WGU C784-Statistics Mod 5 written solution
When one variable causes change in another, we call the first variable the
___________________ variable*.
The affected variable is called the _______________ variable*. - >>>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. - >>>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. - >>>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.
WGU C784-Statistics Mod 5 written solution
, The data in the green cells show marginal frequencies*. These are equal to the sum
of the number of individuals in the corresponding row or column. For example, data
in the "Totals" column and "Female" row shows the total number of females in the
study. It may be helpful to remember that marginal frequencies appear in the
margins of the table.
The bottom, right cell (in both the "Totals" column and the "Totals" row) measures
the total number of individuals in the study.
The relationship between two variables that are both quantitative can be displayed
in a
__________________________. - >>>scatterplot;
As we've seen earlier, every point on a coordinate plane can be represented by an
ordered pair*, ( x , y ). Here, the x -value is typically the _________________variable's
value for a piece of data, and the y value is the corresponding value for the
________________________variable. A simple way to remember this fact is that the
term "explanatory" has an " x " in it. - >>>explanatory variable; response variable
Side-by-side box plots are a good choice for two-variable data where the
explanatory variable is
____________ data and the response variable is ____________ data. - >>>Categorical
Quantitative
Which variable, explanatory or response, is displayed on the x -axis on side-by-side
boxplots? - >>>Sideby-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. - >>>Quantitative
WGU C784-Statistics Mod 5 written solution
