Regression testing is a style of testing that focuses on retesting after changes are made. Remote changing one part breaks another part of the program. Discover everything scribd has to offer, including books and audiobooks from major publishers. Convert your pdfs to powerpoint presentations free and easy to use. Everything is new regression testing starts with a possibly modified. Multiple regression multiple regression typically, we want to use more than a single predictor independent variable to make predictions regression with more than one predictor is called multiple regression motivating example. Conclusion an effective regression strategy, save organizationsboth time and money. Validation of analytical methods authorstream presentation. Regression testing starts with a possibly modified specification, a modified program, and an old test plan which requires updating 2. Sex discrimination in wages in 1970s, harris trust and savings bank was sued for discrimination on the basis of sex. These slides cover topics on hypothesis testing, comparing means, investigating relationships, choosing the right test and nonparametric tests. Ppt regression analysis powerpoint presentation free to.
Rs ec2 lecture 11 1 1 lecture 12 nonparametric regression the goal of a regression analysis is to produce a reasonable analysis to the unknown response function f, where for n data points xi,yi. Regression testing is usually performed by running some, or all, of the test cases created to test. Sum of squares for errors this is the sum of differences between the points and the regression line. There are not many studies analyze the that specific impact of decentralization policies on project performance although there are some that examine the different factors associated with the success of a project.
Automated testing would reduce the time span and would result into efficient and comprehensive testing. Turn your documents into presentation with this online tool. Multiple regression models is the property of its rightful owner. In it world a regression means the return of a bug. A comparative study of five regression testing techniques. Corrective regression testing is triggered by corrections made to the previous version.
Getty images a random sample of eight drivers insured with a company and having similar auto insurance policies was selected. Regression technique used for the modeling and analysis of numerical data exploits the relationship between two or more variables so that we can gain information about one of. Regression testing means the testing process that isdone to find the regressions in the system after doingany changes in. David teaches a class on this subject, giving a very brief description of 23 regression methods in just an hour, with an example and.
Decouvrez comment convertir des fichiers pdf au format powerpoint pptx a l aide dacrobat dc. Fuzzy pvalues and ties in nonparametric tests charles j. Convert pdf portable document format to ppt microsoft powerpoint presentation file in high quality using this. Regression is fitting data by a given function surrogate with unknown coefficients by finding the coefficients that minimize the sum of the squares of the difference with the data.
Convertir pdf en powerpoint convertissez votre pdf en ppt en. Rs ec2 lecture 11 1 1 lecture 12 nonparametric regression the goal of a regression analysis is to produce a reasonable analysis to the unknown response function f, where for n data points xi,yi, the relationship can be modeled as. Cs4723 software validation and quality assurance lecture 6 performance testing performance testing load testing soak testing stress testing spike testing input loads size of inputs an extremely long sql query an extremely large html file for a browser number of inputs provided number of students supported in a school management system number of web pages opened in a browser frequency of. Ppt regression analysis powerpoint presentation free. Work with the most accurate pdf to powerpoint converter. Tes global ltd is registered in england company no 02017289 with its registered office at 26 red lion square london wc1r 4hq. Software testing and analysis university of oregon. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. Pdf to ppt, how to convert a pdf to powerpoint adobe acrobat dc.
All test can be executed automatically at any time. An empirical study of regression test selection techniques 185 acm transactions on software engineering and methodology, vol. Chapter 305 multiple regression introduction multiple regression analysis refers to a set of techniques for studying the straightline relationships among two or more variables. Simplelinearregression outline 1 simple linear regression model variance and r2 2 inference ttest ftest 3 exercises johana. Regression analysis is the property of its rightful owner. The database used for regression testing must beisolated. Regression testing provides a tool for managing change. Contents introduction assumptions of parametric and nonparametric tests testing the assumption of normality commonly used nonparametric tests applying tests in spss advantages of nonparametric tests limitations summary 3. An empirical study of regression test selection techniques. Onesample case binomial tests whether the observed distribution of dichotomous variable a variable that has two values only is the same as that expected from a given binomial distribution.
Regression testing testing tutorials, testing tools. Title npregress intro introduction to nonparametric regression descriptionremarks and examplesreferencesalso see description nonparametric regression models the mean of an outcome given the covariates without making. Costs of test maintenance and test reuse are very variable but in some. Simply open the online converter and draganddrop your pdf into the box. When the feature is alpha ready, or is signed off for testing, the testing team needs to be ready with the test case document a document that contains all test cases, which completely cover the scope of testing for the feature. Regression testing example pdf regression example readx, y if y 0 then power y else power y endif z 1 while power. Just as developers are human and prone to errors, a database containing mission critical information and lines of code on which applications are built. Ppt multiple regression models powerpoint presentation. Convertir votre fichier au format powerpoint ppt online converter. Turn your pdf files into editable powerpoint files to get started on the next big project without slowing down even a little.
Any changes to the scope of the features after this period will affect both the developer and the testing team. One sample test chisquare test one sample sign test2. Factors that diminish the effectiveness of regression test suites 3. Jun 03, 20 what is this term regression regression means errors that occurs due to someaction or activities in a system. The data can be represented by the ordered pairs x, y where x is the independent or explanatory variable, and y is the dependent or response variable. It lists several tools both commercial and open source and links to. Black box software testing spring 2005 regression testing by cem kaner, j.
Regression test code must bekept immune to developer changes. Just as developers are human and prone to errors, a database containing mission critical information. The role of the two significant observations if you see one, check if it is a mistake. Covariance interpreting covariance covx,y 0 x and y are positively correlated covx,y regression as a statistical model 5. These tests should be executed as often as possible throughout the software development life cycle. A free powerpoint ppt presentation displayed as a flash slide show on id. Data quality in relational database regression tests. Regression will be the focus of this workshop, because it is very commonly. Techniques to maintain effectiveness of regression test suite. Convert pdf to powerpoint with sodas free online converter. Rreeggrreessssiioonn tteessttiinngg what is regression testing. A complete example this section works out an example that includes all the topics we have discussed so far in this chapter.
Scope of test testing aims to check the correctness of the whole program regression testing aims to check modified parts of the program 3. I have read up on database testing and have come across a few articles that mention regression testing in regards to databases but i do not fully understand what this all involves. Turn your pdf presentations to editable powerpoint ppt and pptx slideshows. Aucune publicite et limite pdf en ppt en quelques secondes. Availability of test plan testing starts with a specification, an implementation of the specification and a test plan blackbox andor whitebox test cases. What is this term regression regression means errors that occurs due to someaction or activities in a system. May 29, 2017 this website and its content is subject to our terms and conditions. Regression testing is not a simple extension of testing main differences are. Method validation revisited a process of defining a requirement, and conforming that the method has capabilities to meet with what the application of the method requires method suitability is the most important parameter. Convertir vos pdf en presentations powerpoint gratuit et facile a utiliser. Originally based on extreme programming principles. Geyer university of minnesota abstract this article introduces the use of fuzzy pvalues and con dence intervals geyer and meeden2005 with classical nonparametric tests, speci cally with the sign test and the onesample and twosample wilcoxon tests.
Regression testing is usually not more effective than the original test set retestall has good fault detection effectiveness, but may not be cost effective cost effectiveness are there techniques that have the same fault detection effectiveness but the cost of the analysis is significantly less than the test cases it eliminates. Need to determine the effectiveness of regression test suites 3. Notre convertisseur en ligne peut desormais convertir des fichiers pdf ou png en ppt. It is a tool in helping to provide stability in the face of code change. Regression testing means the testing process that isdone to find the regressions in the system after doingany changes in the product. If so, share your ppt presentation slides online with. Convert pdf to ppt free online pdf to ppt converter. Posted by vincent granville on february, 2017 at 5. Convertissez vos documents pdf aux formats microsoft powerpoint ppt et pptx. Experimental design and data analysis for biologists.
No watermarks just converting pdf to ppt in seconds. I see where you are coming from and i fully intend on creating and testing filters that validate data before it even hits the database, but in this question my main intentions were to try verify the design of the database as much as i can before actually using it and also verify that what is actually there is working as was intended for example making sure foreign key constraints arent. You can convert a pdf to powerpoint, choosing either ppt or pptx. Correlation and regression worksheet teaching resources. Techniques to maintain effectiveness of regression test suites 4. Professor of software engineering florida institute of technology and james bach. Open source testing tools links to a variety of tools that are available to students. Convertir pdf en ppt convertissez pdf en powerpoint soda pdf. Test for autocorrelation by using the durbinwatson. Regression analysis helps in establishing a functional relationship between two or more variables.
For each program modification all tests must be passed before the modification is regarded as complete regression testing test first implement later. Regression testing can be used throughout the lifecycle. Times new roman arial narrow symbol wingdings default design microsoft equation 3. In all these kind of projects, as the features get added incrementally, manual testing of the entire product, specially carrying out the. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. The morning session will introduce basic hypothesis testing and later this afternoon you will put some of this knowledge into practice. It can reduce the cost of applying tests by storing the expected result. Pdf to ppt converter convert pdf to powerpoint online free. Nonparametric tests are used when there are no assumptions made about population distribution also known as distribution free tests. Regression testing refers to the portion of the test cycle in which a program is tested to ensure that changes do not affect features that are not supposed to be affected.
Pdf study of effective regression testing in practice. Picturing the world, 3e 3 correlation a correlation is a relationship between two variables. Tes global ltd is registered in england company no 02017289 with its registered office. Introduction to multiple regression 1 the multiple regression model 2 some key regression terminology 3 the kids data example visualizing the data the scatterplot matrix regression models for predicting weight 4 understanding regression coe cients 5 statistical testing in the fixed regressor model introduction partialftests. Some are useful for classroom and project use, others less so. In addition there are additional slides on more advanced topics such as anova and logistic regression if you felt these were appropriate. Convert pdf to powerpoint free online pdf to ppt converter.
Turn your pdf presentations into ppt slides for free. Convert pdf to powerpoint convert your pdf to ppt online. Lots of maths students coming to statistics support usually want help with using spss, choosing the right analysis and interpreting output. The flow chart shows you the types of questions you should ask yourselves to determine what type of analysis you should perform. Test for autocorrelation by using the durbinwatson statistic learn more about minitab 18 use the durbinwatson statistic to test for the presence of autocorrelation in the errors of a regression model. Covariance interpreting covariance covx,y 0 x and y are positively correlated covx,y andf tests 5april2012 2425. Since most of the problems of cause and effect relationships, the regression analysis is a highly valuable tool in economic and business research. Often you can find your answer by doing a t test or an anova.
1099 893 200 244 575 503 355 1028 396 370 1139 1137 1206 608 461 751 1534 1356 1307 563 520 688 209 411 81 315 1417 489 1242 1498 84 191 1213 662 1262 40 1363 1424 288 1152 1251 156 967 1292