Which of the following best describes the logic used in the before-after with control
group experimental design that allows this to be a true experimental design?
A) The experimental group change (O2 – O1) contains the change in the independent
variable due to a. the dependent variable and b. extraneous variables. When we subtract
from this the control group (O4 – O3), which is the change due to the extraneous
variables, we are left with the change due solely to the dependent variable.
B) The experimental group change (O2 – O1) contains the change in the complex
variable due to a. the dependent variable and b. extraneous variables. When we subtract
from this the control group (O4 – O3), which is the change due to the extraneous
variables, we are left with the change due solely to the complex variable.
C) The experimental group change (O2 – O1) contains the change in the dependent
variable due to a. the dependent variable and b. extraneous variables. When we subtract
from this the control group (O4 – O3), which is the change due to the extraneous
variables, we are left with the change in the dependent variable due solely to the
independent variable.
D) The control group change (O2 – O1) contains the change in the independent variable
due to a. the dependent variable and b. extraneous variables. When we subtract from
this the experimental group (O4 – O3), which is the change due to the extraneous
variables, we are left with the change due solely to the dependent variable.
E) The experimental group change (O2 – O1) contains the change in the dependent
variable due to a. the dependent variable and b. extraneous variables. When we subtract
from this the control group (O4 – O3), which is the change due to the extraneous
variables, we are left with the change due solely to the dependent variable.
Researchers should conduct a situation analysis when:
A) clients seek their help in properly defining the problem.
B) clients define the problem and a researcher has to prepare research objectives.
C) the information needed to define a problem is in the DSS.
D) the information needed to solve the problem is in the internal report system.