Analyze the similarities and differences between
parametric and nonparametric tests, and justify when is it
appropriate to run a nonparametric test and when it is not, while
identifying three parametric tests and nonparametric equivalents in
your analysis.
agree or not?
What is a nonparametric test? What is a parametric analysis?
Parametric tests assume underlying statistical distributions in
the data. Therefore, several conditions of validity must be met so
that the result of a parametric analysis is reliable. The student’s
t-test for two independent samples is safe only if each sample
follows a normal distribution and if sample variances are
homogeneous. Nonparametric tests do not rely on any delivery. They
can thus be applied even if parametric conditions...
Parametric vs. Nonparametric Methods
The purpose of this assignment is to differentiate between
parametric and nonparametric statistical methods. In addition, this
assignment will help you understand and implement parametric or
nonparametric statistical methods.
Research the following statistical topics:
Levels of measurement
Parametric and nonparametric methods
On the basis of your research and understanding, respond to the
following:
Find and state the definition of levels of measurement that
distinguishes the five types of data used in statistical
analysis.
In your own...
Read the scenario and pick the most appropriate
nonparametric statistical test (assume several assumptions of
parametric tests were violated).
Imagine that marketing researchers working for a food company
want to determine whether children would prefer ketchup of a
different color. They develop green and blue to compare to their
standard red (all taste the same). They have children taste all
three colors of ketchups (a correlated-groups design) and rank each
on a scale of 1 – 10.
Answer:
A researcher...
Explain the differences and
similarities between parametric and non-parametric inferential
statistics. When (under what circumstances) would a parametric
statistic be your preferred statistic? When would a non-parametric
statistic be your preferred statistic?
This exercise focuses on the difference between Parametric and
Nonparametric statistics.
1. Define parametric statistics.
2. Define nonparametric statistics.
3. What is referred to by the term “scale of measurement”?
4. What are the four common scales of measurement?
5. Which scale(s) of measurement are associated with parametric
statistics?
6. Which scale(s) of measurement are associated with nonparametric
statistics?
7. Identify the scale that would be associated with each of the
following measurements.
a. Gender
b. Percentiles on a standardized...
In the context of providing protection against smallpox,
describe (A) the similarities and (B) the differences between
variolation and vaccination. (C) Now explain the mechanisms by
which immunization with vaccinia virus provides protection against
smallpox.