PSYC 354 Confidence Intervals, Effect Size, and Statistical Power HOMEWORK 7
Assignment covering statistical power, confidence intervals, and effect size calculations.
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PSYC 354
Page 1 of 6
HOMEWORK 7
Confidence Intervals, Effect Size, and Statistical Power
When submitting this file, be sure the filename includes your full name, course and section.
Example: HW7_JohnDoe_354B01
Be sure you have reviewed this module/week’s lesson and presentations along with the practice
data analysis before proceeding to the homework exercises. Complete all analyses in SPSS, then
copy and paste your output and graphs into your homework document file. Answer any written
questions (such as the text-based questions or the APA Participants section) in the appropriate
place within the same file.
Part I: Concepts
Questions 1–8
These questions are based on the Nolan and Heinzen reading and end-of-chapter
questions.
Part I: Questions 1a-1e
Fill in the highlighted blanks with the best word or words.
1-a) The confidence interval is centered around the __mean______ of the sample.
1-b) Cohen's d measures the difference between means in terms of _standard deviation
not standard error______.
1-c) According to Cohen's conventions, a d value of _appropriate measure of effect size
for a z stat indicates a large effect.
1-d) A study that calculates the mean effect size from the individual effect sizes of many
studies is called a(n) _meta-analysis_______.
1-e) Statistical power refers to the probability of successfully rejecting the _null
hypothesis_______.
Part I: Questions 2-5
End-of-chapter problems:
Complete the following Nolan and Heinzen end-of-chapter exercises for Chapter 8:
Page 1 of 6
HOMEWORK 7
Confidence Intervals, Effect Size, and Statistical Power
When submitting this file, be sure the filename includes your full name, course and section.
Example: HW7_JohnDoe_354B01
Be sure you have reviewed this module/week’s lesson and presentations along with the practice
data analysis before proceeding to the homework exercises. Complete all analyses in SPSS, then
copy and paste your output and graphs into your homework document file. Answer any written
questions (such as the text-based questions or the APA Participants section) in the appropriate
place within the same file.
Part I: Concepts
Questions 1–8
These questions are based on the Nolan and Heinzen reading and end-of-chapter
questions.
Part I: Questions 1a-1e
Fill in the highlighted blanks with the best word or words.
1-a) The confidence interval is centered around the __mean______ of the sample.
1-b) Cohen's d measures the difference between means in terms of _standard deviation
not standard error______.
1-c) According to Cohen's conventions, a d value of _appropriate measure of effect size
for a z stat indicates a large effect.
1-d) A study that calculates the mean effect size from the individual effect sizes of many
studies is called a(n) _meta-analysis_______.
1-e) Statistical power refers to the probability of successfully rejecting the _null
hypothesis_______.
Part I: Questions 2-5
End-of-chapter problems:
Complete the following Nolan and Heinzen end-of-chapter exercises for Chapter 8:
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University
American Public University
Subject
Psychology