Which of the following is a good reason for randomly allocating units to treatments experiment?

Produces experiment groups that are similar

The reason that block designs are sometimes used in experimentation is to

eliminate confounding with another factor

An institutional review board ensures that the:

research obeys all standards that protect human subjects

The principle of confidentiality in regards to individuals refers to the following:

information about individuals is never made public

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Design Experiments

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Questions 10

Answers

1
Research studies collect data from people follow guidelines. Some basic ethical principles are
all data are released to the subjects after completion
informed consent by the subjects
by an review institutional advance review board
Choices A and B, but not C
2
Which of the following is a good reason for randomly allocating units to treatments experiment?
Keeps response variable within the bounds of the experiment
It creates a double blind experiment
Produces experiment groups that are similar
The explanatory variable is not known
3
Read the following
the placebo effect
confounding
comparison
nonresponse
4
In designing an experiment, blocking is used
as a substitute for a control group
as a first step in randomization
to reduce bias
to reduce variation
5
The reason that block designs are sometimes used in experimentation is to
prevent the placebo effect
eliminate confounding with another factor
allow double blinding
eliminate sampling variability
6
An experiment where the evaluator does not know which treatment each individual received is
matched pair
hidden bias
randomization
double-blind
7
This study does not attempt to influence the process, or the variables of interest.
Experiment
Block design
Double-blind Experiment
Observation
8
Read the following
All the above
II only
II and III
I and II
9
An institutional review board ensures that the:
statistical design of research is sound
researchers are qualified to do the research
research obeys all standards that protect human subjects
research has some scientific value
10
The principle of confidentiality in regards to individuals refers to the following:
results and conclusions of study are not made public
information about individuals is never made public
the identities of subjects are unknown even to researchers
information of financing agency is never made public

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