Exam (elaborations)
Exercise 25 Conducting Power Analysis
- Course
- Institution
Exercise 25 Conducting Power Analysis
[Show more]
Seller
Follow
Angelicer
Reviews received
Content preview
Exercise 25: Conducting Power AnalysisQuestions to Be Graded
1. 1. What is one approach a researcher can take when there is a lack of information in the
literature concerning effect sizes that can be used as a basis for her power analysis?
If the literature review does not produce any helpful effect size information, then the researcher
may consider contacting other investigators in the field to obtain guidance (Hulley, Cummings,
Browner, Grady, & Newman, 2013).
1. 2. Perform a power analysis based on a small hypothesized Cohen’s d, α = 0.05, and power
= 0.80, two-tailed, with two groups of equal size using G*Power. What is the required N?
The required N= 788 (Total Sample Size)
1. 3. Redo your power analysis from Question 2 using a power of 85% instead of 80%.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Angelicer. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R117,98. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
84190 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 14 years now