Quantitative metrics are collected throughout production and use of the technical documentation. Software metrics are used to measure the quality of the project. Cost of quality is one of the most important, yet often overlooked, metrics to monitor. Software metric deals with the measurement of software product and software product development processand it guides and evaluates software development 3.
Remove this presentation flag as inappropriate i dont like this i like this remember as a favorite. Measuring your quality assurance efforts helps you improve your software quality framework, understand your product quality more deeply, and create a more efficient software testing process. Motivation why is qa measurement important quality assurance. This is the single best book on software quality engineering and metrics that ive encountered. Modular design is the cornerstone of quality software, and metrics that can predict an optimum modular structure are critical. A metric defines in quantitative terms the degree to which a system, system component, or process possesses a given attribute. Samate software assurance metrics and tool evaluation. A quick overview of agile is given here although there are many agile process sites on the web that provide more indepth information. The ideal example to understand metrics would be a weekly mileage of. Software quality assurance is the process of ensuring that the established guidelines, procedures and processes are followed.
Software quality measurement and metrics 1 free download as powerpoint presentation. Society for software quality ssq washington, dc area chapter software assurance metrics and tool evaluation samate overview by. This 1992 report presents mechanisms for describing and specifying software problems and defectstwo software measures used to understand and predict software product quality and software process efficacy. The broadest tier of software testing metrics, companylevel measurements, offer executives a clear view as to how qa efforts are translating into the delivery of highquality software. Software quality metrics are a subset of software metrics that focus on the quality aspects of the product, process, and project. Software metrics are important for many reasons, including measuring software performance, planning work items, measuring productivity, and many other uses. But avoid asking for help, clarification, or responding to other answers. In depth look at dsqi and software package metrics.
As part of your pqi program, you can record your metrics metric and work at improving it over time. This case study dramatically illustrates the benefits of codelevel measurement activities. Recommendations for initial core measures cmusei92tr19 this report and the methods in it are outgrowths of work initiated by the quality subgroup of the software metrics definition working group. The main activity of the quality assurance process is the selection and definition of standards that are applied to the software development process or software product. Software quality management sqm is a management process that aims to develop and manage the quality of software in such a way so as to best ensure that the product meets the quality standards expected by the customer while also meeting any necessary regulatory and developer requirements, if any. Software quality metrics from theory to implementation. 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. Metrics on the use of metrics serve as one measure of your practice quality. Current implementation of quality metrics in the software development process is typically carried out within a control cycle.
A case study thomas drake national security agency to ensure costeffective delivery of high quality software, nsa has analyzed effective quality measures applied to a sample code base of 25 million lines. Thus the objectivity criterion was refined and subdivided into criteria as follows. Ppt software quality management powerpoint presentation. The quality assurance program is ongoing and methodically examines the actual adequacy of the business services and products. Tim boland tuesday may 29, 2012 software assurance metrics and tool evaluation samate is a broad and inclusive project at the. Software testing metrics are a way to measure and monitor your test activities. Software quality metrics dos and donts qaiquest 1 hour. Breaking down the defects that software is measured for. Comprehensive in scope with extensive industry examples, it shows how to measure software quality and use measurements to. This metrics describe the project characteristics and execution. All employees should know how their work affect the metrics.
Quality assurance qa online training quality assurance online training offer is intuitively designed with the guidance of software professionals who have hands on real time experience. Software quality measurement and metrics 1 software bug. When implementing software quality metrics, we need to first understand the. This paper discusses the development of traditional. A metric is a quantitative measure of the degree to which a system, system component, or process possesses a given attribute. Crosby, among many others, has defined software quality as. Software quality metrics for testers starwest 20 slideshare. Software metrics and measurements semantic scholar. Capers jones, from the forewordmetrics and models in software quality engineering, second edition, is the definitive book on this essential topic of software development.
These are more closely associated with process and product metrics than with project metrics. The measurement of software design quality springerlink. Software assurance metrics and tool evaluation samate. Metrics and models in software quality engineering. Ppt software quality measurement and metrics powerpoint. The term software quality metrics illustrate the picture of measuring the software qualities by recording the number of defects or security loopholes present in the software. Successful software quality assurance is highly dependent on software metrics. A framework for counting problems and defects september 1992 technical report william a. Management provides the plans to achieve the targets. Software testing and quality assurance software quality metrics ppt. Finding defects in code post release and prior to release, predicting defective code, predicting project success, and predicting project risk. Sep 16, 2017 a software metric is a measure of software characteristics which are quantifiable or countable. A measure of some property of a piece of software or its specifications.
A concept study for a national software engineering database cmusei92tr23 software measurement for dod systems. Quality assurance is a planned and systematic means for assuring management that the defined standards, practices, procedures, and methods of the process are applied. Download as ppt, pdf, txt or read online from scribd. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. Software metrics for different types of software defects. Software metrics are used to obtain objective reproducible measurements that can be useful for quality assurance, performance, debugging, management, and estimating costs.
To learn more about how these metrics can be used to improve and optimize your qa strategy, listen to our webinar, 5 essential quality metrics that matter. The project is to develop an application in java that uses molecular dynamics simulation techniques to simulate the interaction between the atoms in a group of water molecules. Apr 26, 2010 from nasa software assurance standard nasastd8739. Even if a metric is not a measurement metrics are functions, while measurements are the numbers obtained by the application of. May 16, 2016 in software engineering, a metric is a property of software that you can measure. Justifiable confidence that software is free from vulnerabilities, either intentionally designed into the software or accidentally inserted at any time during its life cycle and that the software functions in the intended manner. The true cost of quality includes both the cost of poor quality and investments in good quality. Simply, metric is a unit used for describing an attribute. The multiple professional views of product quality may be very different from popular or nonspecialist views. The bugs framework bf precisely defines software weaknesses and organizes them into orthogonal classes, such as encryptiondecryption bugs enc, buffer overflow bof, injection inj, and control of interaction frequency cif. A free powerpoint ppt presentation displayed as a flash slide show on id. Now customize the name of a clipboard to store your clips. The real concern is spi, and these issues are examined in our conclusions. A case study thomas drake national security agency to ensure costeffective delivery of highquality software, nsa has analyzed effective quality measures applied to a sample code base of 25 million lines.
We can accurately measure some property of software or process. Basically, as applied to the software product, a software metric measures or quantifies a characteristic of the software. As explained above, test metrics are the most important to measure the quality of the software. Moreover, they have levels of abstraction beyond even the viewpoints of the developer or user. Quality assurance is the process of defining how software quality can be achieved and how the development organization knows that the software has the required level of quality. Software metrics is a standard of measure that contains many activities which involve some degree of measurement. Resource metrics are related to the resources required for software development and their performance. This information is vital to recognizing how effective a companys overall software development and testing operation is, and which steps would need to be. The purpose of quality measurement and analysis ma is to develop and sustain a measurement capability used to support management information needs 1. By examining the theoretical bases on quality metrics, a base set of common quantitative metrics can be devised and mapped to quality metrics in which they reside. The software is considered valid when it conforms to these quality factors at some acceptable level.
This document explains the software quality assurance plan sqap for mse project of lakshmikanth ganti. In software engineering, a metric is a property of software that you can measure. More importantly, they give insights into your teams test progress, productivity, and the quality of the system under test. A metricsbased approach to technical documentation quality. A framework for counting problems and defects william a. Metrics can be defined as standards of measurement.
A software metric is a standard of measure of a degree to which a software system or process possesses some property. This paper surveys existing metrics and suggests the. Apr 29, 2020 software testing metric is be defined as a quantitative measure that helps to estimate the progress, quality, and health of a software testing effort. Software quality managers require software to be tested before it is released to the market, and. Process metrics focus on the process of software development and measure process characteristics, aiming to detect problems or to push forward successful practices. The metrics can together be used to answer operational questions regarding quality. Even if a metric is not a measurement metrics are functions, while measurements are the numbers obtained by the application of metrics, often the two terms are used as synonyms. Via development of requirements using measurable targets, recording plans and processes, employees coaching and report on information related to requirements, the main quality assurance program will act as a process. Important software test metrics and measurements explained with. The course starts with basics of software testing, methodically teaches you complicated topics such as software configuration management, creation of a test plan, estimating test etc.
A measurement based software quality framework 419 approach. Schedule variance project management tool none sokware tesrng e. Basic terminologies project indicators classification of software metrics. Clipping is a handy way to collect important slides you want to go back to later. Ppt software quality management powerpoint presentation free to view id.
It needs linkage the software quality model and software metrics through qualityfactors in order to offer measure method for software quality assurance 1. Software testing and quality assurance software quality metrics 1. Phasor measurement units pmus, phasor data concentrators. Devise actions to improve quality of the software process improvements process performance improvements product productivity improvements product improvements 4. Define what quality means for large software systems 2. These characteristics can be used to improve the development and maintenance activities of the software. Asq, or the american society of quality, developed the following formula for cost of quality. Software quality metrics means measurement of attributes, pertaining to software quality along with its process of development. Some companies put the quality objectives within the quality assurance manual. Product metrics describe the characteristics of the product such as size, complexity, design features, performance, and quality level.
Florac with the quality subgroup of the software metrics definition working group and the software process measurement project team draft helvetica b 52 ul. Metrics on the use of metrics also highlights those metrics that may have a problem in use, are. View the full whiteboard friday series on metrics that. I would like to start the list with developer domain quality indicators and then move on to quality assurance qa domain metrics. A case study of a software firm in israel reveals weaknesses in the application of quality metrics. Developing quality assurance program and quality metrics.
Software quality assurance is a set of activities designed to evaluate the process by which the products are developed or manufactured. Software quality involves the conformance of a software product to some predefined set of functional requirements at a specified level of quality. Sqa software quality assurance, software quality metrics, process metrics, product metrics introduction definition. The practice of applying software metrics to operational factors and to maintain factors is a complex task. However, quality measurement is not restricted to counting of defects or vulnerabilities but also covers other aspects of the qualities such as maintainability, reliability, integrity. Article purpose this article looks at the agile software development process and discusses the role of software quality assurance sqa, software quality control sqc, software process improvement spi and cmmi within agile. The measurement of software testing process attributes enables the management to have better insight in to the software testing process.
An in depth look at research that has been done on software metrics. There are a large number of quality factors against which software may be validated. Nov 24, 2016 in this post we will go through seven software quality performance indicators and analyze benefits they present the team and eventually how it could improve the overall quality of the product. The objective of measuring the software quality is to use the received results for planning the budget and schedule, estimating costs, testing and qa, debugging, etc. Describes the characteristics of the product such as size, complexity, design features, performance, and quality level. Within the software development process, there are many metrics that are all related to each. The purpose of gathering measurements and metrics of software products and projects is to be able to relate one product or project to another for the purpose of sche. Software quality metrics in quality assurance to study the. The adobe flash plugin is needed to view this content. Software metrics massachusetts institute of technology. Software testing metric is be defined as a quantitative measure that helps to estimate the progress, quality, and health of a software testing effort. No way to measure property directly or final product does not yet exist for predicting, need a model of relationship of predicted variable with other measurable variables. Quality of the software, different metrics look at different aspects of quality, but this aspect deals with the code.
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