Posted: January 28th, 2021
ANOVA Study: The Alpha Shoe Company and Discussion
Application:
ANOVA Study: The Alpha Shoe Company
When
you read published research studies, you find experimental studies in which one
or more variables are manipulated. One example is a study on whether students
with windows in their classrooms give their instructors higher evaluations than
students with no windows in their classrooms. You could do a basic comparison
of these two groups with a ttest,
which you studied in Week 4. Perhaps it would be more interesting to have
additional levels of environment. You might compare instructor evaluations when
students are in a class with no windows, a class with windows that look out to
a parking lot, a class with windows that look out to a park, or a class with no
windows but pictures of windows on the wall. Since you have multiple levels of
the factor, environment, an ANOVA would help you understand the differences
between each.
This
Assignment will give you practice conducting a study with multiple levels of a
factor by working once again with the Alpha Shoe Company. Since many research
studies rely on the ANOVA for analysis, you will enhance your ability to
understand the results of research studies that you evaluate in the future.
Scenario:
Imagine that Alpha Shoe Company wants to do a second study
on the vertical lift basketball players can gain from their shoes. Recall that
they believe that how high a player can jump is affected by the type of shoe that
player wears. They identified 25 professional basketball players and randomly
assigned each of them to wear one of the five types of shoe, then measured how
high each player jumped. Each playerâs jumping height is given below in inches:PlutoOmega IIBeta SuperDeltaGamma29.129.228.528.427.729.829.128.928.027.930.028.829.228.828.029.028.728.329.028.231.128.830.028.928.0Assignment:
To complete this Assignment, submit
by Day 7
answers to the following. Use SPSS to compare the means of the scores of these
five shoes with a one-way ANOVA. Save and submit both your SPSS data file and
your output.
Before
comparing the scores with an ANOVA, state your null and alternative hypotheses
in words (not formulas).Identify
the independent and dependent variables.Name
the levels in your identified factor.State
the within-group degrees of freedom and explain how you calculate it.State
the between-group degrees of freedom and explain how you calculate it.Identify
the obtained F value.Identify
the pvalue.Explain
whether the F test is significant.
Explain how you know and what it tells you.Explain
what you can conclude about the effect of shoe choice on vertical lift (jumping
height).Should
you conduct a post hoc test? Why or why not? If yes, conduct a Tukey HSD post
hoc analysis. Explain what the results tell you about type of shoe choice and
vertical lift.Submit
three documents for grading: your text (Word) document with your answers and
explanations to the application questions, your SPSS Data file, and your SPSS
Output file.Provide
an APA reference list.
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