Assumptions and parameters affect sample size

Assignment Help Operating System
Reference no: EM13914958

If you do a quantitative study (SCHOOL ADVISORY PROGRAM) for your dissertation, you must estimate the sample size you will need in order to have a reasonable chance of finding a relationship among the variables stated in your research hypotheses (should one exist), given your statistical analysis(es) and assumptions/calculations of factors 2-4 above. You must do this, even if you plan to use a convenience sample (see below). There are a number of sample size calculators available. Northcentral uses G*Power, which is required in this Activity. You will use G*Power's "a priori power analysis" function to calculate a sample size. If it yields an unrealistically large size sample, you will rethink your design and assumptions and, perhaps, use G*Power's "compromise power analysis" to estimate a workable sample size that makes sense. If you plan on using a convenience sample, you would use both analyses as part of your argument that your convenience sample is large enough.

Warm-up:

Download G*Power and play around with it. See how changes in assumptions and parameters affect sample size estimates.

Submit:

Calculate the sample size needed given these factors:

one-tailed t-test with two independent groups of equal size

small effect size (see Piasta, S.B., & Justice, L.M., 2010)

alpha =.05

beta = .2

Assume that the result is a sample size beyond what you can obtain. Use the compromise function to compute alpha and beta for a sample half the size. Indicate the resulting alpha and beta. Present an argument that your study is worth doing with the smaller sample.

Calculate the sample size needed given these factors:

ANOVA (fixed effects, omnibus, one-way)

small effect size

alpha =.05

beta = .2

3 groups

Assume that the result is a sample size beyond what you can obtain. Use the compromise function to compute alpha and beta for a sample approximately half the size. Give your rationale for your selected beta/alpha ratio. Indicate the resulting alpha and beta. Give an argument that your study is worth doing with the smaller sample.

In a few sentences, describe two designs that can address your research question. The designs must involve two different statistical analyses. For each design, specify and justify each of the four factors and calculate the estimated sample size you'll need. Give reasons for any parameters you need to specify for G*Power.

Length: 4 pages not including title page and reference page.

References: include at least 4 resources.

Reference no: EM13914958

Questions Cloud

Identify the specific role played by the average consumer : Choose a specific market-based instrument that likely would encourage the advance of dark green technologies and improve U.S. exports of these goods and services. Explain using economic analytical tools.
Disadvantages of selling combination of stocks and bonds : The school you would like to attend costs $100,000. To help finance your education, you need to choose whether or not to sell your 1,000 shares of Apple stock, 1,000 EE Savings Bonds. What are the advantages and disadvantages of selling a combination..
What are the issues involved in resolving legal disputes : What are the issues involved in resolving legal disputes in international transactions?What are some practical considerations of taking legal action against a foreign business partner based in another country?
Identify the significant internal control weaknesses : Identify the significant internal control weaknesses in each of the above situations. In each case identified in requirement 1, recommend changes that would improve the system.
Assumptions and parameters affect sample size : If you do a quantitative study (SCHOOL ADVISORY PROGRAM) for your dissertation, you must estimate the sample size you will need in order to have a reasonable chance of finding a relationship among the variables stated in your research hypotheses (..
Find the value of call option and the intrinsic value : Use two-state option pricing model to find the value of a call option and the intrinsic value given the following parameters:
Operating system security fundamentals : 1. Explain the function of an operating system. 2. Describe the operating system security environment from a database perspective.
Activities completed efficiently and achieving the firms : Managers are responsible for getting activities completed efficiently and achieving the firm's goals by utilizing:
Grant company performed services on account : Grant Company performed services on account for $80,000 in 2013. Grant collected $50,000 cash from accounts receivable during 2013, and the remaining $30,000 was collected in cash during 2014.

Reviews

Write a Review

 

Operating System Questions & Answers

  Give three technical merits of unix

Give three technical merits of UNIX b) Differentiate between "clustered systems" and "real-time systems". c) Describe the purpose of using "trust relationship"

  Question 1agiven memory partition of 100 kb 500kb 200kb

question 1agiven memory partition of 100 kb 500kb 200kb 300kb and 600 kb in order how would each of the first-fit

  Question about electronic monitoring

Give some discussion about Electronic checking, such as what is used in stores, through employers and by the public. Planning these questions in the response.

  Logical security and physical security

Discuss and explain real world examples from current events that decrease within your assigned category with your assigned group?

  Explain the role of antennas in transmission

Explain the role of antennas in transmission of radio waves. Determine what type of antenna is typically used in a wireless LAN?

  Different measures used to protect operating systems

Write a paper discussing the relative advantages and disadvantages of at least three different measures used to protect operating systems.

  Software faults - windows xp

Analysis shows that there are about five faults per 1000 lines of code in carefully made programs, which means that one million lines of codes will have 5000 faults.

  Operating system proposal

Operating System Proposal

  Why are computers equipped with multiple layers of cache

Why are computers equipped with multiple layers of cache - Would it be good to have one big one?

  Write program for unix that takes as input name of directory

Write a program for UNIX or Windows 7 that takes as input the name of a directory. The program should print a list of the files in the directory, one line per file, and after the file name, print the size of the file.

  Role of a database management system

Discuss the role of a database management system (DBMS) and what are its benefits and how does a relational database management system differ from a flat document?

  Compare and contrast closed-source mobile operating systems

Compare and contrast open-source and closed-source mobile operating systems (OSs), and explain the main reasons why you would consider utilizing one (1) of these types of OSs over the other. Provide at least two (2) reasons to justify your decisio..

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd