This document contains a practice test with 10 multiple choice questions about statistics. The questions cover topics like chi-square distribution, goodness of fit tests, regression analysis, and APA style. An answer key is not provided. The document also includes a rubric that can be used to grade assignments on content, writing skills, and APA format.

1. Title
ABC/123 Version X
1
6
1
Practice Set 5
Practice Set 5
1. This distribution has only one parameter. The curve is
skewed to the right for small df and
becomes symmetric for large df. The entire distribution
curve lies to the right of the vertical
axis. The distribution assumes nonnegative values only
A. t distribution
B. Normal distribution
C. Chi-square distribution
D. Linear regression.
2. Find the value of x2 for 12 degrees of freedom and an area of
.035 in the right tail of the chi-
square distribution curve. What is the value of chi-square?
Round to three decimal places
3. Determine the value of x2 for 14 degrees of freedom and an
area of .25 in the left tail of the
chi-square distribution curve. What is the value of chi-
square? Round to three decimal places

2. 4. Determine the value of x2 for 23 degrees of freedom and an
area of .95 in the left tail of the
chi-square distribution curve. What is the value of chi-
square? Round to three decimal places.
5. Α ____________ compares the observed frequencies from a
multinomial experiment with
expected frequencies derived from a certain pattern or
theoretical distribution. The test
evaluates how well the observed frequencies fit the
expected frequencies.
A. Goodness-of-fit test
B. Chi-square test
C. Linear regression
6. The __________ are the frequencies obtained from the
performance of a
multinomial experiment. The expected frequencies are the
frequencies that we expect to obtain
if the null hypothesis is true.
A. Observed frequencies
B. Expected frequencies
C. Fluctuating frequencies
7. The expected frequency of a category is given by Ε = np
where n is the sample size and p is the
probability that an element belongs to that category if the
null hypothesis is true. The
________ for a goodness–of–fit test are k – 1, where k
denotes the number of possible
outcomes (or categories) for the experiment.
A. Number of observations
B. Degrees of freedom
C. Total population

3. 8. This model includes only two variables, one independent and
one dependent, is called a _____1______. The ___2____ is the
one being explained, and the ___3___ is the one used to explain
the variation in the dependent variable. Select the correct letter
that would make the sentence true.
1. Select a letter from the list to make this statement true.
2. Select a letter from the list to make this statement true.
3. Select a letter from the list to make this statement true.
A. Linear model
B. Qualitative variable
C. Multivariate analysis of variance
D. Independent variable
E. Simple regression model
F. One-way Analysis of Variance
G. Dependent variable
H. Quantitative variable
9. A population data set produced the following information.
N=465, ∑x=3920, ∑y=2650, ∑xy=26,570, ∑x2=48,530
Find the population regression line. Round to three decimal
places. Use the format as an example when submitting your
equation 456.123 + 789.123x
10. The following information is obtained from a sample data
set.
n=12, ∑x=66, ∑y=588, ∑xy=2244, ∑x2=396
Find the estimated regression line Use this format as an
example when submitting your equation 123 – 45x
Copyright © XXXX by University of Phoenix. All rights
reserved.
Assignment RubricUtilize this rubric if an Assignment specific
rubric is not available. Refer to the Assignment directions for

4. specific content requirements.Instructors: Enter total available
points in cell H2, and values between 0 and 4 in the yellow
cells in the Score column. Total available points =Content
RubricIntroductoryEmergentPracticedProficient/MasteredScore
WeightFinal Score0 - 1.92 - 2.93 - 3.94Content
QualitySubmission does not address most of the assignment
requirements and/or indicates no understanding of critical
concepts.Includes some of the assignment requirements.
Opinions and ideas may indicate misconceptions or little
understanding of some critical concepts.Includes all assignment
requirements with minor errors/omissions, supports opinions
and ideas creatively, clearly, and correctly. Displays
understanding of most critical concepts.Includes all assignment
requirements, supports opinions and ideas creatively, clearly,
and correctly with details and examples where appropriate.
Displays complete understanding of critical
concepts.90%0.00ResourcesDoes not include any resources (0)
or sources utilized are not relevant and credible sources of
information(1).Not all sources utilized are relevant and/or
credible and/or does not meet the required number of
sources.Supports many opinions and ideas with relevant and
credible sources of information; meets the required number and
types of resources.Supports opinions and ideas with relevant
and credible sources of information; meets or exceeds the
required number and types of resources.10%0.00Content
Score0Writing Deduction
RubricIntroductoryEmergentPracticedProficient/MasteredScore
WeightFinal Score0-1234Grammar & PunctuationThe overall
meaning of the paper is difficult to understand. Sentence
structure, subject verb agreement errors, missing prepositions,
and missing punctuation make finding meaning difficult.Several
confusing sentences or 1 to 2 confusing paragraphs make
understanding parts of the paper difficult, but the overall paper
meaning is clear. Many subject verb agreement errors, run-on
sentences, etc. cause confusion.A few confusing sentences make
it difficult to understand a small portion of the paper. However,

5. the overall meaning of a paragraph and the paper are intact.
There may be a few subject verb agreement errors or some
missing punctuation.There are one or two confusing sentences,
but the overall sentence and paragraph meanings are clear.
There are a few minor punctuation errors such as comma splices
or run-on sentences.35%0.00SpellingThe many misspelled
words and incorrect words choices significantly interfere with
the readability.Many typos, misspelled words, or the use of
incorrect words making understanding difficult in a few
places.Some misspelled words or the misuse of words such as
confusing then/than. However, intent is still clear.A few
misspelled words normally caught by spellcheckers are present
but do not significantly interfere with the overall readability of
the paper.35%0.00Order of Ideas & Length RequirementPaper
has some good information or research, but it does not follow
assignment directions and is lacking in overall organization and
content.The order of information is confusing in several places
and this organization interferes with the meaning or intent of
the paper. However, the paper has a generally discernible
purpose and follows assignment directions overall.The order of
information is confusing in a few places and the lack of
organization interferes with the meaning or intent of the paper
in a minor way.The overall order of the information is clear and
contributes to the meaning of assignment. There is one
paragraph or a sentence or two that are out of place or other
minor organizational issues. A few sentences may be long and
hard to understand. Meets length
requirements.20%0.00APAThere is some attempt at APA
formatting and citing. There are one or more missing parts such
as the cover page or references list. Citation information may be
missing. Citation mistakes make authorship unclear.This is an
attempt use APA formatting and citing. There are both in-text
citations and reference listings. Citation information may be
missing or incorrect (i.e. Websites listed as in-text or reference
citations). There is an attempt to cite all outside sources in at
least one place. Authorship is generally clear.There is an overall

6. attempt at APA formatting and citation style. All sources appear
to have some form of citation both in the text and on a reference
list. There are some formatting and citation errors. Citations
generally make authorship clear.There is a strong attempt to cite
all sources using APA style. Minor paper formatting errors such
as a misplaced running head or margins may occur. Minor in-
text citation errors such as a missing page number or a
misplaced date may occur. Quotation marks and citations make
authorship clear.10%0.00Writing Deduction0.00Final
Score0.00PercentageERROR:#DIV/0!Feedback:
&"Arial,Bold"&18General Assignment/Project Rubric
&8Kaplan University
School of Health Sciences
Version 1401C