Clipping is a handy way to collect important slides you want to go back to later. All employees should know how their work affect the metrics. 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. Software metrics are used to measure the quality of the project. These characteristics can be used to improve the development and maintenance activities of the software project metrics. However, quality measurement is not restricted to counting of defects or vulnerabilities but also covers other aspects of the qualities such as maintainability. Software testing and quality assurance software quality metrics 1. Metrics on the use of metrics also highlights those metrics that may have a problem in use, are. In todays article, we will learn with examples and graphs software test metrics and measurements and how to use these in the software testing. Software metrics is a standard of measure that contains many activities which involve some degree of measurement. As part of your pqi program, you can record your metrics metric and work at improving it over time. What is quality software quality metrics types of software quality metrics three groups of software quality metrics difference between errors, defects, faults, and failures lines of code function point feature point customer satisfaction metrics tools used for quality. Software quality metrics software metrics can be classified into three categories.
Chapter 11 assuring the quality of software maintenance components 254 11. Metric a measurement scale and measure used for measurement iso14598. Software testing metrics are a way to measure and monitor your test activities. Product quality metrics software quality metrics overview. Software measurement metrics software metrics is a standard of measure that. These areas are derived from isoiec 91261 software engineering product quality1 and include usability, sustainability and maintainability. Currently, the compendium describes 37 software quality attributes factors, criteria, and 23 software quality metrics. Software quality measurements department of computer science. Quantitative metrics are collected throughout production and use of the technical documentation. 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. Metrics can be defined as standards of measurement. Goal of the compendium of software quality standards and metrics is to provide an information resource connecting software quality standards with wellknown software metrics. The course is a must for every project manager, qa.
From the software quality standpoint, the relationship of the scopes of the three metrics can be represented by the venn diagram in figure 4. Florac with the quality subgroup of the software metrics definition working group and the software process measurement project team draft helvetica b 52 ul. Software quality measurements department of computer. The practice of applying software metrics to operational factors and to maintain factors is a complex task. Product metrics describe the characteristics of the product such as size, complexity, design features, performance, and quality level.
Thus the objectivity criterion was refined and subdivided into criteria as follows. 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. Now customize the name of a clipboard to store your clips. Suppose, in general, kilogram is a metric for measuring the attribute weight. This site provides tools, articles, plans and recommendations to help you implement a sound and solid qa program. Software metrics massachusetts institute of technology. Kloc is an abbreviation for kilo lines of code that are used to determine bugs, errors, and costs per lines. Pdf software quality assurance, testing and metrics. Breaking down the defects that software is measured for. Qa metrics what metrics to collect and why software testing. It defines six product quality characteristics and in an annex provides a suggestion of quality subcharacteristics. Software testing and quality assurance software quality metrics ppt. View the full whiteboard friday series on metrics that. 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.
Some companies put the quality objectives within the quality assurance manual. A framework for managing, measuring, and predicting attributes of software development products and processes reflecting the immense progress in the development and use of software metrics in the past decades, software metrics. The treatment of the topics is crisp and accompanied with illustrative. Software metrics for different types of software defects. A metricsbased approach to technical documentation quality. The metrics can together be used to answer operational questions regarding quality. Compendium of software quality standards and metrics.
Without measuring these, a project cant be completed successfully. 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. Quality metrics 7 root cause analysis of incidents uncovered in sdlc phases for a project. Software metrics are used to obtain objective reproducible measurements that can be useful for quality assurance, performance, debugging, management, and estimating costs.
Developing quality assurance program and quality metrics. Learn more about measurement system analysis msa qualityone offers quality and reliability support for product and process development through consulting, training and project support. Even if a metric is not a measurement metrics are functions, while measurements are the numbers obtained by the application of. Basically, as applied to the software product, a software metric measures or quantifies a characteristic of the software. A rigorous and practical approach, third edition provides an uptodate, accessible, and comprehensive introduction to software metrics. Best software quality assurance practice process in the. Plot a multiline chart for the 3 causes over 5 cycles, as below. 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. I assist beginners, small businesses, organizations and quality professionals.
It measures the defects relative to the software size expressed as lines of. But avoid asking for help, clarification, or responding to other answers. Important software test metrics and measurements explained with. Simply, a metric is a unit used for describing an attribute. One of the key concepts in modern software engineering is. Finding defects in code post release and prior to release, predicting defective code, predicting project success, and predicting project risk. Describes the characteristics of the product such as size, complexity, design features, performance, and quality level process metrics. Ultimate measure of software productivity measuring functions is. In software engineering, a metric is a property of software that you can measure. A survey of software quality metrics for software measurement process 1 anam zai, 2 rawish butt, 3 shiza nawaz 1,2,3international islamic university, islamabad, pakistan email. In respective stages of software development the degree to which a system, component, or process meets specified requirements.
The objective of this standard is to provide a framework for the evaluation of software quality. Samate software assurance metrics and tool evaluation. Software metrics a rigorous and practical approach. Isoiec 9126 does not provide requirements for software, but it defines a quality model which is applicable to every kind of software. 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. Devise actions to improve quality of the software process improvements process performance improvements product productivity improvements product improvements 4. A quick overview of agile is given here although there are many agile process sites on the web that provide more indepth information. A measure of some property of a piece of software or its specifications. Software quality metrics for testers why and what to measure.
A software metric is a standard of measure of a degree to which a software system or process possesses some property. Metrics on the use of metrics serve as one measure of your practice quality. Software estimation, measurement, and metrics acqnotes. Quality of the software, different metrics look at different aspects of quality, but this aspect deals with the code.
Software testing metrics and measurements are very important. In software projects, it is most important to measure the quality, cost, and effectiveness of the project and the processes. The key to effective quality assurance services is managing expectations of the. We can accurately measure some property of software or process. Successful software quality assurance is highly dependent on software metrics.
Software quality metrics for testers starwest 20 slideshare. In this video we continue with our theme metrics that matter ryan yackel dives into quality metrics and the reports behind them. Ppt software quality measurement and metrics powerpoint. Software metrics can be classified into three categories.
A criteriabased assessment gives a measurement of quality in a number of areas. 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 measurement and metrics powerpoint ppt presentation. This course covers all quality assurance methods and techniques that aim at achieving this goal of building quality into the software. Introduction to samate has more details for us, software assurance sa covers both the property and the process to achieve it. The quality assurance program is ongoing and methodically examines the actual adequacy of the business services and products. Define what quality means for large software systems 2. Sizeoriented metrics are used to analyze the quality of software with the help of a kloc quantifier. Software assurance metrics and tool evaluation samate. A framework for counting problems and defects william a. Qualityone provides knowledge, guidance and direction in quality and reliability activities, tailored to your unique wants, needs and desires. The assessment involves checking whether the software, and the project that develops it, conforms. It needs linkage the software quality model and software metrics through qualityfactors in order to offer measure method for software quality assurance 1.
Quality assurance solutions supports you in starting or improving your qa program. Software assurance metrics and tool evaluation samate is a broad and inclusive project at the. Management provides the plans to achieve the targets. Software quality metrics in quality assurance to study the. A measurement based software quality framework 419 approach.
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