spss homework 1 single-sample a plus category mathematics experts

**Green & Salkind – Lesson 22, Exercises 1–4**

Don't use plagiarized sources. Get Your Custom Essay on

spss homework 1 single-sample a plus category mathematics experts

Our work is always; • #Top-Quality • #Plagiarism-free

**Green & Salkind: Lesson 23, Exercises 6–8**** **

** **

**SPSS Homework 1 Instructions**

**Single-Sample t-Tests and Paired-Sample t-Tests**

**Part 1:**

** **

**Note that for all problems in this course, the standard cutoff for a test of significance will be p < .05 unless otherwise noted in the problem.**

** **

Homework files are found in Blackboard Course Content > Syllabus and Assignment Instructions > Assignment Instructions > SPSS Homework 1 > SPSS Homework Files (select the particular number for the module/week you are working on). Always use the Blackboard files instead of the files on the Green & Salkind website as some files have been modified for the purposes of this course.

**1. Single-Sample t-Test: Based on Green & Salkind – Lesson 22, Exercises 1–4 (Mod1_Lesson 22 Exercise File 1), but follow the instructions below instead.**

1. A total score variable is included in the data file in Blackboard (“tot_score”), so you do not have to compute it. Use this variable as your dependent variable.

2. The test value for the single-sample *t*-test is **2** (1/4 of 8, or the score which a student would achieve by chance). Use 2 as the test value when running the analysis for this exercise.

3. Conduct a single-sample *t*-test on the total score variable. Paste the output into your Word document and type in the answers to the following questions underneath the output: (2 pts for output)

a. Mean algebra score (2 pts)

b. *t*-test value (2 pts)

c. *p* value (significance) of the test (2 pts)

4. Write a Results section in current APA style based on your analyses. (3 pts)

5. Create a histogram that demonstrates the distribution of scores. Be sure to correctly label the X and Y axes. (3 pts)

**2. Green & Salkind: Lesson 23, Exercises 6–8: (Lesson 23, Exercise File 1)**

** **

The following helpful tips are numbered to correspond with the exercise number to which they refer within the Green & Salkind text:

6. Instead of identifying these values on your output, as the text states, write them into your Word file as written answers for #6 a, b, c, and d. (2 pts for output and 2 pts each for a–d)

7. All homework “Results sections” must follow the example given in the Course Content document “Writing Results of Statistical Tests in Current APA Format” (Note: you do not have to refer to a figure). (4 pts)

8. You will create the boxplot here instead of in the Results section. (2 pts)

**Part 2:**

**1.** A school psychologist administers an interview assessment that screens for possible post-traumatic stress disorder (PTSD) to school children who live in an area that was recently affected by a natural disaster. She assumes that children in this area have higher scores than children in the general population, who normally score a **2.3**. The table on the following page shows the scores for a particular class of children at the school. **Using the table, enter the data into a new SPSS file and conduct a single sample t-test to evaluate whether or not these children scored higher than the general population.**

The steps will be the same as the ones you have been practicing in Part 1 of the assignment—the only difference is that you are now responsible for creating the data file as well. Remember to name and define your variables under the “Variable View,” then return to the “Data View” to enter the data. (2 pts)

PTSD Interview Scores |

5 9 4 1 1.2 6.5 8 7.4 1.2 3.2 2 1.5 4.9 4 1.3 2 |

**2. **Write a Results section in current APA style describing the outcome. All homework “Results sections” must follow the example given in the Course Content document “Writing Results of Statistical Tests in Current APA Format” (Note: you do not have to refer to a figure). (4 pts)

** **

**3.** A math teacher wants to evaluate whether or not a new method of teaching leads to improved scores on a geometry test. To test this claim, she administers similar geometry tests to 16 students before and after they have been introduced to the new method. She decides to use a two-tailed test to provide for detecting results in the opposite direction, just in case. **Using the table below, enter the data into a new SPSS data file and test the math teacher’s claim using a paired-samples t-test).**

The steps will be the same as the ones you have been practicing in Part 1 of the assignment—the only difference is that you are now responsible for creating the data file as well. Remember to name and define your variables under the “Variable View,” then return to the “Data View” to enter the data. (2 pts)

Student | Geometry Test Before | Geometry Test After |

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | 100 64 86 78 89 97 75 85 99 91 100 80 79 93 62 70 | 98 67 80 80 89 95 80 96 100 95 100 83 83 91 70 72 |

**4.** The null hypothesis for this scenario can be written as follows: “There is no difference between mean test scores before and after the introduction of the geometry teaching method (M before = M after).” Based on your results, should this hypothesis be accepted or rejected, and why? Write your answer in sentence form. (2 pts)

Submit this assignment by 11:59 p.m. (ET) on Monday of Module/Week 1.

The price is based on these factors:

Academic Level

Number of Pages

Urgency

Principle features

- Free cover page and Reference List
- Plagiarism-free Work
- 24/7 support
- Affordable Prices
- Unlimited Editing

Upon-Request options

- List of used sources
- Anytime delivery
- Part-by-part delivery
- Writer’s sample papers
- Professional guidance

Paper formatting

- Double spaced paging
- Any citation style (APA, MLA, Chicago/Turabian, Harvard)
- 275 words/page
- Font 12 Arial/Times New Roman

We offer essay help by crafting highly customized papers for our customers. Our expert essay writers do not take content from their previous work and always strive to guarantee 100% original texts. Furthermore, they carry out extensive investigations and research on the topic. We never craft two identical papers as all our work is unique.

Our capable essay writers can help you rewrite, update, proofread, and write any academic paper. Whether you need help writing a speech, research paper, thesis paper, personal statement, case study, or term paper, Homework-aider.com essay writing service is ready to help you.

You can order custom essay writing with the confidence that we will work round the clock to deliver your paper as soon as possible. If you have an urgent order, our custom essay writing company finishes them within a few hours (1 page) to ease your anxiety. Do not be anxious about short deadlines; remember to indicate your deadline when placing your order for a custom essay.

To establish that your online custom essay writer possesses the skill and style you require, ask them to give you a short preview of their work. When the writing expert begins writing your essay, you can use our chat feature to ask for an update or give an opinion on specific text sections.

Our essay writing service is designed for students at all academic levels. Whether high school, undergraduate or graduate, or studying for your doctoral qualification or master’s degree, we make it a reality.