Expert answer:Applied Statistics for Psychology Unit 3 Project:

Answer & Explanation:I need help with my unit 3 project
Directions:

In this project you will be using
the dataset called Stat_Grades.sav which is located in Doc
Sharing under the Instructor-Graded Projects. The dataset,
Stat_Grades.sav, is a sample of data collected from three sections
of college statistics classes. The data describes 105 statistics students,
including their Student ID, gender, ethnicity, year in school, etc. Please
carefully review the dataset and understand all the variables and what
they represent.
Insert your answers and work,
including any charts, graphs, or output, on this document.
There are many variables in Stat_Grades.sav
that can be used to describe the students in the dataset. Use the variable Review
and answer the following questions:
1. Using the Variable
View in SPSS (lower left), write out how Review is labeled,
and note how many Review categories
are included.
2. What type of
data and level of measurement does the Review
variable represent: Is the data discrete or continuous? Is the data qualitative
or quantitative? Is the data nominal, ordinal, ratio, or interval?

3. Use SPSS to
output the mean, median, and mode for the Review. Include the SPSS here. Which of the three descriptive
numerical measures of central tendency (mean, median, or mode) BEST describes the variable Review? What information does
the measure tell you about the students in the dataset (Stat_Grades.sav) – be
specific?
4. Which of the
three descriptive numerical measures of central tendency (mean, median, or
mode) LEAST (or most poorly) describes
the variable Review? Explain.

5. Choose the
most appropriate graph to represent the variable Review. (There is more than one possible answer). Create the
graph in SPSS and include it here. Be sure the graph is fully labeled. Does this graph confirm what the mode tells you
about this dataset? Explain.

(For questions 6 – 9): There are many
variables in Stat_Grades.sav that can be used to describe the students in the
dataset. Use the variable prevGPA  (previous GPA) and answer the following
questions:

6. What type of
data and level of measurement does the prevGPA
variable represent: Is the data discrete or continuous? Is the data qualitative
or quantitative? Is the data nominal, ordinal, ratio, or interval?
 
7. Use SPSS to
output the mean, median, and mode for the prevGPA. Include the SPSS here. Which of the three
descriptive numerical measures of central tendency (mean, median, or mode) BEST describes the variable prevGPA? What information does
the measure tell you about the students in the dataset (Stat_Grades.sav)?

8. Which
descriptive numerical measure of central tendency is LEAST appropriate to describe the variable prevGPA? Use SPSS to output ONLY that one numerical
measure. Include it here. Why is that numerical measure the least
appropriate? What information does that measure tell you about the students in
the dataset (Stat_Grades.sav)?
9. Choose the
most appropriate graph to represent the variable prevGPA. Create the graph in SPSS and include it here. Be
sure the graph is fully labeled.
Discuss why you chose this graph type and what it tells you about the students
in the class.
(For
questions 10-13): Relationships (correlation) between variables.

10.
List all five quizzes, and include for each quiz, the numerical measures of mean,
range, and standard deviation. Explain what these measures tell you about
the quizzes as compared to each other. On which quiz did students appear to
perform the best? Which quiz had the lowest performance? Which quiz had the
highest variance (variation in scores) and what does that tell you about that
quiz? (100 word minimum, fully explain, include SPSS).
Fill in this table, include the SPSS, and
then explain and answer the other questions.
 

Mean

Range

Standard Deviation

Quiz 1

Quiz 2

Quiz 3

Quiz 4

Quiz 5

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