**Comparing Means Worksheet**

Comparing Means Worksheet

PSYCH/625 Version 4

1

University of Phoenix Material

Comparing Means Worksheet

The following questions require that you access data from Using SPSS for Windows and Macintosh. This data is available under Resources in the Textbook Resources document. The team must work together to solve these questions.

- Review the one sample t-test instructional video before completing this problem. The data set for this problem can be found through the Pearson Materials in the Textbook Resources link. The data for this question is in the data file named Lesson 22 Exercise File 1. John is interested in determining if a new teaching method, the involvement technique, is effective in teaching algebra to first graders. John randomly samples six first graders from all first graders within the Lawrence City School System and individually teaches them algebra with the new method. Next, the pupils complete an eight-item algebra test. Each item describes a problem and presents four possible answers to the problem. The scores on each item are 1 or 0, where 1 indicates a correct response and 0 indicates a wrong response. The IBM® SPSS® data file contains six cases, each with eight item scores for the algebra test.

Conduct a one-sample t-test on the total scores. On the output, identify the following:

TASK ONE: PLACE OUTPUT HERE

TASK TWO: ANSWER THESE QUESTIONS

a. Mean algebra score

b. T value

c. P value

- Review the one-way ANOVA instructional video before completing this problem. The data set for this problem can be found through the Pearson Materials in the Textbook Resources link. The data for this question is in the data file named Lesson 25 Exercise File 1. Marvin is interested in whether blonds, brunets, and redheads differ with respect to their extrovertedness. He randomly samples 18 men from his local college campus: six blonds, six brunets, and six redheads. He then administers a measure of social extroversion to each individual.

Conduct a one-way ANOVA to investigate the relationship between hair color and social extroversion. Conduct appropriate post hoc tests. On the output, identify the following:

TASK THREE: PLACE OUTPUT HERE

TASK FOUR: PLACE OUTPUT HERE

TASK FIVE: ANSWER THESE QUESTIONS

a. F ratio for the group effect

b. Sums of squares for the hair color effect

c. Mean for redheads

d. P value for the hair color effect

From Green & Salkind (2011). Copyright © 2012 Pearson Education. All Rights Reserved. Adapted with permission.

Copyright © XXXX by University of Phoenix. All rights reserved.

Copyright © 2017 by University of Phoenix. All rights reserved.

Likewise, large type, large margins, large indentations, triple-spacing, increased leading (space between lines), increased kerning (space between letters), and any other such attempts at “padding” to increase the length of a paper are unacceptable, wasteful of trees, and will not fool your professor.

The paper must be neatly formatted, double-spaced with a one-inch margin on the top, bottom, and sides of each page. When submitting hard copy, be sure to use white paper and print out using dark ink. If it is hard to read your essay, it will also be hard to follow your argument.

**Comparing Means Worksheet**