Hypothesis testing I Kevin Soo Outline • • • • Theory and the research process What is a hypothesis? Hypothesis testing Statistical models Theory and the research process Theory • A belief – Can be true or false – P (belief) • A proposed/possible explanation for something – ‘Some students do poorly at statistics because they have less exposure to mathematics’ – ‘Women don’t date me because I’m ugly’ – ‘Manchester United lost the Premier League because they struggled with injury
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Is standardized testing the way to go? You wake up in the morning belated for the bus because of sleeping late. You arrive in school‚ forgetting to brush your teeth and comb your hair. When you are confronted with the test‚ you are so tired and you get a pink eye. The next event you know is that you fail the test. Do you want to fail for just having an inadequate day? Standardized testing may cause you to stay in the same grade just for having an inadequate day‚ not getting enough sleep‚ etc
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Release date: 27 April 2014 Submission date: 9 May 2014 TUTORIAL ON HYPOTHESIS TESTING (1) Basic Concept 1. State the null and alternative hypothesis for each conjecture : a. A researcher thinks that if expectant mothers use vitamin pills‚ the birth weight of the babies will increase. The average birth weight of the population is 3.0kg. b. An engineer hypothesizes that the mean number of defects can be decreased in a manufacturing process of compact disks by using robots instead of humans
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SOFTWARE TESTING SOFTWARE TESTING Testing is the process of executing a program with the intent of finding errors. TESTING PRINCIPLES All tests should be traceable to customer requirements. Tests should be planned long before testing begins. The Pareto principle applies to software testing. Stated simply‚ the Pareto principle implies that 80 percent of all errors uncovered during testing will likely be traceable to 20 percent of all program components. TESTING PRINCIPLES Testing should begin
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Engineering Classification of Software Testing Tools Based on the Software Testing Methods Khaled M. Mustafa‚ Rafa E. Al-Qutaish‚ Mohammad I. Muhairat Al-Zaytoonah University of Jordan‚ Airport Street‚ Amman‚ Jordan Abstract During the software development life cycle‚ testing is highly needed to assure the quality of the software process and product. For many years‚ researchers and practitioners came-up with a variety of software tools to automate the testing process. In this paper‚ we will classify
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Software Testing Carnegie Mellon University 18-849b Dependable Embedded Systems Spring 1999 Authors: Jiantao Pan mailto:%20jpan@cmu.edu Abstract: Software testing is any activity aimed at evaluating an attribute or capability of a program or system and determining that it meets its required results. [Hetzel88] Although crucial to software quality and widely deployed by programmers and testers‚ software testing still remains an art‚ due to limited understanding of the principles of software
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student‚ such as high school graduation or grade promotion. Tests are called "standardized" when all students answer the same questions under similar conditions and their responses are scored in the same way. Research has shown that high-stakes testing causes damage to individual students and education. It is not a reasonable method for improving schools. Test-taking anxiety is common among high school and college students. The anxiety can be quite stressful and
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Animal testing is cruel‚ unnecessary‚ and disgusting. The results of most animal tests are rarely relevant to humans and are not reliable. It is unneeded in today’s society‚ considering our technological advancements. More accurate and scientifically superior methods are available‚ usually costing less and even being quicker to perform. There are methods such as using blood from human volunteers‚ using artificial human skin (proven by the National Cancer Institute to be a perfect substitute)‚ human
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Mandatory Drug Testing for Welfare Recipients Introduction Mandatory drug testing for welfare recipients is a controversial issue. Should the government hold people accepting government entitlement’s accountable for illegal drug use or would this type of action cross the boundary of civil liberties into an invasion of privacy? The government has a vested interest in getting welfare recipients back into the working population. Holding welfare recipients accountable for illicit drug use only
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Testing a Theory PSY/201 December 23‚ 2012 Testing a Theory I used the archival research method and naturalistic observation combined in a school project in high school about how different types of music changed the behavior of the 2 different types of birds I had at the moment that which were 2 Finches and a Cockatiel. The type of research methods I use were descriptive research to investigate their patterns of behavior and it was quite interesting because they both liked classical music
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