We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.

Assessing non-parametric or t tests - Assignment Example

Comments (0) Cite this document
Critique of a t-test used in a research article FirstName LastName MN 503, Kaplan University 21/11/2012 Critique of a t test used in a research article INTRODUCTION The purpose of this paper is to critique the t test of the research article ‘The Effects of Vitamin B6 on the Liver of Diabetic Rats: A Morphological and Biochemical Study’ done by Sehnaz Bolkent, Ozlem Sacan, Ayse Karatug and Refiye Yanardag…
Download full paperFile format: .doc, available for editing
Polish This Essay91.8% of users find it useful
Assessing non-parametric or t tests
Read TextPreview

Extract of sample
"Assessing non-parametric or t tests"

Download file to see previous pages Student’s t-test for single mean is used to test a hypothesis on a specific value of the population mean. It is used to test the null hypothesis against the alternative hypothesis. The t-test for difference of means is used to test the hypothesis that two populations have the same mean. A paired t-test is usually used when the two samples are dependent- this happens when each individual observation of one sample has a unique relationship with a particular member of the other sample. A t-test for correlation coefficient is used for testing an observed sample correlation coefficient (r).Lastly, a t-test for testing significance of regression coefficient is used to test the significance of regression coefficients in linear and multiple regression setups. However no matter the type of t-test you use two assumptions have to be met. These assumptions are that the populations from which the samples are drawn are normal and the population standard deviation is not known. In this research article unpaired t-test was used. Unpaired t-test which is also known as the student's t-test assumes that analyzed data is from a normal distribution. An unpaired test will need two independent groups to be applied and the sample size from the two groups may or may not be equal. In addition to the assumption that the data is from a normal distribution, there is also the assumption that the standard deviation (SD) is approximately the same in both groups. BRIEF DESCRIPTION OF THE STUDY The research study is ‘The Effects of Vitamin B6 on the Liver of Diabetic Rats: A Morphological and Biochemical Study’ which was done by Sehnaz Bolkent, Ozlem Sacan, Ayse Karatug and Refiye Yanardag. It is a biological study where the aim of the research study was to examine the morphological and biochemical results of supplement B6 on liver organ cells of normal and streptozotocin-diabetic mice. A trial diabetic issue was caused by intraperitonal hypodermic injection of streptozotocin (STZ) in a single amount of 65 mg/kg. Vitamin B6 was applied by subcutaneous hypodermic injection at an amount of 20 mg/kg for 15 times. The degenerative changes in the liver organ cells, biochemical changes in sugar stages and in serum aspartate transaminase (AST), alanine transaminase (ALT) and alkaline phosphatase (ALP) actions were identified. Degenerative changes were seen in the suffering from diabetic issues creatures by light microscopic research. Blood vessels sugar stages, serum AST, ALT and ALP actions improved in the suffering from diabetic issues group. On the other hand, the treatment with supplement B6 for 15 times changed these results. As a result, all of the acquired morphological and biochemical results led to the summary that supplement B6 has a safety effect against diabetic issues. DESCRIPTION AND CRITIQUE OF THE STATISTIC The biological results in this study were evaluated using unpaired t-test. The two variables used were control and control animals given vitamin B6. Both variables were subjected to the same conditions for a specified time of 15 days. The function unpaired test is used to compare two population means. Basically the main aim of this function is to test the null hypothesis that the two population means are equal or the same. The procedure to carrying out an unpaired t-test is first you have to calculate the difference between ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
(“Assessing non-parametric or t tests Assignment Example | Topics and Well Written Essays - 1000 words”, n.d.)
Assessing non-parametric or t tests Assignment Example | Topics and Well Written Essays - 1000 words. Retrieved from https://studentshare.org/statistics/1462322-assessing-non-parametric-or-t-tests
(Assessing Non-Parametric or T Tests Assignment Example | Topics and Well Written Essays - 1000 Words)
Assessing Non-Parametric or T Tests Assignment Example | Topics and Well Written Essays - 1000 Words. https://studentshare.org/statistics/1462322-assessing-non-parametric-or-t-tests.
“Assessing Non-Parametric or T Tests Assignment Example | Topics and Well Written Essays - 1000 Words”, n.d. https://studentshare.org/statistics/1462322-assessing-non-parametric-or-t-tests.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document
Exploring Inferential Statistics and Their Discontents
Represented as ? = 1.73 Ha: New toothpaste lessens cavities in comparison to other brands, indicated as ? < 1.73 c) we cannot apply the z-test or the t-test since we require the standard deviation apart from the mean alone of the new brand toothpaste. Sample size=60, sample mean = 1.5 d) Population standard deviation or sample standard deviation – missing hypothesisized mean = 1.73 e) Ho will be rejected since t-test is not applicable f) lack of standard deviation makes determination of 95% confidence interval impossible since it requires sample mean +/- t critical value*s/sqrt n 4.
8 Pages(2000 words)Assignment
Role of Cardiac Nurses
The standards of practice and competencies would need to be developed in order to understand what is required to practice in a cardiac care environment, which are acknowledged to be complex and technologically intricate. For the cardiac nurses, to be able to do this efficiently, knowledge, skills, and attitudes are all that is needed.
14 Pages(3500 words)Assignment
Speaking Tests
These theorists argue that speaking ability should not be judged cognitively, but rather as a social construct. The exact use of such ideas to those involved in the very practical (and often pragmatic) process of developing speaking tests is unclear. In the Interview Format type of language test, often called the Oral Proficiency Test (OPI), the following set-up occurs.
15 Pages(3750 words)Assignment
Teaching and Assessing
Nursing is a critical field and requires accuracy on the part of the nursing practitioners in order to guarantee quality care with patients. In this regard, the research defines how important it is that nursing students and nurses already holding a degree remain in the percentile of nurses that are considered to be practicing top-notch effective treatment in the medical field.
15 Pages(3750 words)Assignment
Tests of Intelligence
ainly applied for profile analysis meant to diagnostically distinguish between average and exceptional children and for identifying specific cognitive strengths and weaknesses (Watkins, Glutting & Youngstrom, 2005) Developed by David Wechsler, this is an intelligence test for
2 Pages(500 words)Assignment
Two-Sample t-Tests
(Note: You should be able to find these values using the definition of z-score. You should not need to use a formula or do any serious calculations.) 5. For a population with μ = 50 and σ = 10, find the score
1 Pages(250 words)Assignment
Assessing the Cardiovascular System
By accepting a few simple dietary behaviors, including watching portion sizes and counting calories to boost weight loss, a person might be capable of lowering their blood pressure, which is a confirmed risk
1 Pages(250 words)Assignment
Personality Tests
The score for my test for this particular factor is above average which shows that I like to be social gatherings and enjoy the company of others most of the time. Although this is not completely true because I do not
3 Pages(750 words)Assignment
The Parametric Curve Defined
The amplitude constant for the x parametric curve (A) was varied using default values in Microsoft Mathematics 4.0, which ranged between 0 and 2. Moreover, all other
3 Pages(750 words)Assignment
Assessing Infrastructure Failure
Natural disasters like the Hurricane in the United States and the earthquake in China caused inconsiderate damage to the infrastructure that the public and industries relied on. Cascaded failures is a
1 Pages(250 words)Assignment
Let us find you another Assignment on topic Assessing non-parametric or t tests for FREE!
Contact us:
Contact Us Now
FREE Mobile Apps:
  • About StudentShare
  • Testimonials
  • FAQ
  • Blog
  • Free Essays
  • New Essays
  • Essays
  • The Newest Essay Topics
  • Index samples by all dates
Join us:
Contact Us