Week 8 - Signature Assignment: Develop a Statistical Analysis Plan (Solved)
statistics
Description
Week 8 - Signature Assignment:
Develop a Statistical Analysis Plan
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Instructions
To
complete this Signature Assignment, you will use the statistical knowledge and
scientific writing skills acquired in this course. You will be initially asked
to develop two types of research questions, or research questions involving
relationships between variables and research questions involving the difference
between variables.
A research question is a clear inquiry
asking just one question and eliciting more than a simple yes or no response.
Begin your research question with how, why, or what rather than does, do, or can. Once your research questions have been developed,
you will need to create corresponding null and alternative hypotheses for each
research question. Remember, the null hypothesis indicates a non-significant
relationship or difference will exist while an alternative hypothesis indicates
a significant relationship or difference will exist.
Research
questions and hypotheses are divided into two categories: relationship
questions and descriptive questions.
Relationship
research questions include comparison (difference questions) and strength of
association (associational):
·
Difference research questions are used
when comparing scores (on the dependent variable) on two or more groups. These
questions attempt to demonstrate that groups are not the same on the dependent
variable.
·
Association research questions are
used when the researcher wants to examine the association or relationship
between variables. The approach is commonly used to see how two or more
variables covary (vary together). For example, do higher values on one variable
correspond to higher values on the other? These questions are also used to how
one or more variables can be used to predict another variable.
Descriptive research questions
do not use inferential statistics. Descriptive questions are used to summarize
or describe the current data. No generalization to a larger population of
individuals.
