• The first step in determining what statistical test to use is to determine the type of research question to be answered by the statistical analysis. In elementary courses, the two basic types of questions are:

1. the degree of relationship or dependence among variables (H0 = there is no relationship or dependence, and the statistical test answers the question as to whether any relationship or dependence found is sufficiently different from zero that it can be considered “statistically significant”.)

2. the significance of group differences (H0 = there is no difference between groups. The statistical test answers the question as to whether an observed difference is probably due just to random factors, or is large enough to be considered “statistically significant” and due to the treatment factor.)

• The next step is to determine the nature(s) of the variables under discussion, and whether they meet the assumptions of a particular test (e.g. the data are normally distributed).

• Types/levels of data:
– nominal = unordered categories (e.g. religion; country of birth; etc.) – ordinal = ordered categories (e.g. level of agreement on an opinion survey; proficiency level at a martial art as measured by the colour of one’s belt) ➢ For nominal and ordinal data, what is usually recorded is the number of occurrences of a particular result (e.g. number of Christians, number of Buddhists etc. but these numbers are not the values of the variable. In this case, variable = religion, values = Christian, Buddhist, …and the numbers are the number of occurrences of a particular value.) – interval = ordinal + distance between values is of constant size (e.g. temperature) – ratio = interval + (i) there is a meaningful zero and (ii) the ratio between two numbers is meaningful (e.g. weight, distance, number of children) ➢ ratio and interval data can be either discrete (i.e. there are...

...
QoS Techniques: MPLS
CET 2486C – Network Technologies
Professor:
November 27, 2012
Abstract
MPLS or Multi Protocol Label Switching is a networking technology that functions between layers 2 and 3 of the OSI model. MPLS constitutes of adding a label (sometimes called “Shim” because of their placement between layer 3 and layer 2 headers.) to the data package, this label contains special addressing and sometimes prioritization information. Because the MPLS label...

...Matched T-test (four steps of NHT)
Step 1
Scientific (just the written portion)
Null (no effect)
Alternative (there is an effect)
Step 2
Rather than finding standard error we look for standard deviation first. Standard error has a parallel formula to SD. Smd = SD/ sqrt n.
Step 3
Set Alpha to .05 two tailed
Critical value of t. (t table)
Decision rules, either sketch or write out.
Step 4
Conclusion
Mean of difference scores
T-statistic takes the same...

...Assumptions and Conditions for using StatisticalTests
Bright Eugene
Imo State University, Owerri
ABSTRACT
All statistical procedures have underlying assumptions, some more stringent than others. In some cases, violation of these assumptions will not change substantive research conclusions. In other cases, violation of assumptions will undermine meaningful research. Establishing that one's data meet the assumptions of the procedure...

...used when conducting the research question is t-Test of independence.
Reasons for using the technique
The reason why t-Test of independence is used because there are only two group of independent variable, which is Buddhist and non-Buddhist. Besides that, the independent variable is categorical, while the dependent variable is using interval scale.
Another reason for using t-Test of independence is because there are independent groups and the...

...Maturity is knowing when to do the right thing and following up on one's commitment even when he or she is tempted to do wrong. Huck Finn, in The Adventures of Huckleberry Finn by Mark Twain, is faced with such temptations and situations where he is able to make the right choice and mature physically, mentally, and spiritually. He is able to avoid bad decisions, which leads him to become a more mature, established young man. Although Huck Finn finds himself...

...Selecting The Right Communication Channel
Communication serves four major functions within a group or organization: control, motivation, emotional expression, and information (Robbins, Judge 2011 p.342). Using the appropriate communication channel to convey a message is just as important as the message itself in order to fulfill any of these four functions effectively. In the following three scenarios I will choose the proper communication channel and defend my reasoning for...

...One sample t-test
A one sample t-test allows us to test whether a sample mean (of a normally distributed interval variable) significantly differs from a hypothesized value. For example, using the hsb2 data file, say we wish to test whether the average writing score (write) differs significantly from 50. We can do this as shown below.
ttest write=50
One-sample t test...

...CHOOSING THE RIGHT SECURITY INVESTMENTS Page 1
Choosing the Right Security Investments and Awareness of All Available Options
CHOOSING THE RIGHT SECURITY INVESTMENTS Page 2
Subject: Information of the different categories of security investments and the way of figuring out what security investment is right for you.
1) What kind of questions you must ask...

2500 Words |
7 Pages

Share this Document

{"hostname":"studymode.com","essaysImgCdnUrl":"\/\/images-study.netdna-ssl.com\/pi\/","useDefaultThumbs":true,"defaultThumbImgs":["\/\/stm-study.netdna-ssl.com\/stm\/images\/placeholders\/default_paper_1.png","\/\/stm-study.netdna-ssl.com\/stm\/images\/placeholders\/default_paper_2.png","\/\/stm-study.netdna-ssl.com\/stm\/images\/placeholders\/default_paper_3.png","\/\/stm-study.netdna-ssl.com\/stm\/images\/placeholders\/default_paper_4.png","\/\/stm-study.netdna-ssl.com\/stm\/images\/placeholders\/default_paper_5.png"],"thumb_default_size":"160x220","thumb_ac_size":"80x110","isPayOrJoin":false,"essayUpload":false,"site_id":1,"autoComplete":false,"isPremiumCountry":false,"userCountryCode":"US","logPixelPath":"\/\/www.smhpix.com\/pixel.gif","tracking_url":"\/\/www.smhpix.com\/pixel.gif","cookies":{"unlimitedBanner":"off"},"essay":{"essayId":35089306,"categoryName":"Periodicals","categoryParentId":"17","currentPage":1,"format":"text","pageMeta":{"text":{"startPage":1,"endPage":4,"pageRange":"1-4","totalPages":4}},"access":"premium","title":"Choosing the Right Elementary Statistical Test","additionalIds":[7,93,5,2],"additional":["Education","Education\/Greek System","Computer Science","Awards \u0026 Events"],"loadedPages":{"html":[],"text":[1,2,3,4]}},"user":null,"canonicalUrl":"http:\/\/www.studymode.com\/essays\/Choosing-The-Right-Elementary-Statistical-Test-775263.html","pagesPerLoad":50,"userType":"member_guest","ct":10,"ndocs":"1,500,000","pdocs":"6,000","cc":"10_PERCENT_1MO_AND_6MO","signUpUrl":"https:\/\/www.studymode.com\/signup\/","joinUrl":"https:\/\/www.studymode.com\/join","payPlanUrl":"\/checkout\/pay","upgradeUrl":"\/checkout\/upgrade","freeTrialUrl":"https:\/\/www.studymode.com\/signup\/?redirectUrl=https%3A%2F%2Fwww.studymode.com%2Fcheckout%2Fpay%2Ffree-trial\u0026bypassPaymentPage=1","showModal":"get-access","showModalUrl":"https:\/\/www.studymode.com\/signup\/?redirectUrl=https%3A%2F%2Fwww.studymode.com%2Fjoin","joinFreeUrl":"\/essays\/?newuser=1","siteId":1,"facebook":{"clientId":"306058689489023","version":"v2.8","language":"en_US"},"analytics":{"googleId":"UA-32718321-1"}}