Designing Experiments
It is critical that the writer pay attentions to details for this paper and respond to all questions
mentioned here. APA is critical especially when using tables. The writer must read on how to use
tables in word document. The are 4 main component to address here and the writer must clearly
address this 4 main points while expanding and addressing all component of the assignment.
While it is important to master the use of SPSS software to conduct data analysis, it is equally
important to ensure quality in the methods used to collect the data analyzed. Recall the familiar
adage, “Garbage in, garbage out,” and consider that if data is poorly collected, the analysis of that
data will also suffer. Think about how the interrelatedness of the hypothesis, data collection method,
and statistical analysis impacts research quality.
Having reviewed the readings from Experimental and Quasi-Experimental Designs for Research, by
Campbell and Stanley, consider the hypothesis you have chosen for your dataset from Week 3.
How might you design an experiment that will effectively collect data for this chosen hypothesis?
How will you minimize threats to validity?
Will it be a true experiment or a quasi-experiment?
Why or why not?
DESIGNING EXPERIMENTS 2
Designing Experiments
The core purpose of this paper will be to establish whether there is any causation relationship
between the number of employees, the gender of the supervisor and the number of working
hours with a rate of injury rate at a particular site. Thus, the analysis will revolve around
finding evidence on whether there exists any relationship. This will help in determining the
trend of the rate of injuries in these sites. This research paper will follow the Experimental
design procedures since the sample to be studied will be randomly selected (Grabbe, 2015).
This is a necessary and a sufficient precaution taken to ensure that the researcher’s biasedness
does not affect the results of the study. Furthermore, it reduces the effect of confounding
variables.
The research will be guided by the following objectives.
- To establish whether some sites are safer than others.
DESIGNING EXPERIMENTS 3
- To determine whether the gender of the supervisor facilitates the increase of injury
rates in a given place. - To ascertain the existence and nature of the relationship between injury rate and
working sites and gender of the supervisor and if it does exist, which nature of the
relationship.
In agreement with (Zikmund, 2012), the fundamental of good research is based on the
research objective. This they act as a map for the analysis and also the inference of any study.
The research will be a completely randomized design for simplicity and convenience
purposes. The sample will be randomly selected from the three sites (Seattle, Boston, and
Phoenix). The supervisors, in this case, will act as the treatment, and through randomization
the experiment will control the effect of extraneous variables (Grabbe, 2015).
One of the purposes of using this design in this research is to reduce the variability (Zikmund,
2012). This will make it easier for the researcher to detect and establish whether there exist a
relationship between different treatments. Furthermore, to eliminate the threat to internal and
internal validity, replication in the data analysis will be conducted so that the results can be
interpreted at a certain level of significance. This is because (Zikmund, 2012) stipulates that
all results of the research study are useful when they are accurately and confidently
interpreted.
The following research hypothesis will guide this experiment design: H 0 : There is no
significance difference in injury rate at different working sites when different genders are
managing. Versus, H 1 : There is a significance difference in injury rate at different working
sites when different genders are managing. This hypothesis will act as the backbone of the
whole analysis, which will help in making an inference (Grabbe, 2015). Furthermore, this
hypothesis is like a summary of the objectives of the research. Based on this hypothesis the
DESIGNING EXPERIMENTS 4
research question that will be answered in this study is: is there any significance difference in
injury rate at different working sites when different genders are managing?
Some of the analysis that will be carried out in favor of answering the research question are
ANOVA. This analysis will help in establishing whether there exists a significant difference
between injury rates at different working sites when there is increased the number of
employees or working hours. Furthermore, correlation analysis will be conducted to find out
the nature of the relationship between different variables. Just because, correlation can be
used to predict the behavior of one variable based on the other (Grabbe, 2015). Also,
regression analysis will be performed to come up with a model that will help in predicting the
rate of injuries using other variables.
References
Grabbe, J. W. (2015). Implications of Experimental versus Quasi-Experimental Designs. The
Palgrave Handbook of Research Design in Business and Management, 141.
Zikmund, W., Babin, B., Carr, J., & Griffin, M. (2012). Business research methods. Cengage
Learning.
McDermott, R. (2011). Internal and external validity. Cambridge handbook of experimental
political science, 27-40.
