Sunday, June 14, 2009

What is the relationship of Metrics and Measurement and Quality?

Here are the points to be noted

  • Software requirements are the foundation from which quality is measured. Lack of conformance to requirements is lack of quality.
  • Specified standards define a set of development criteria that guide the manner in which software is engineered. If the criteria are not followed, lack of quality will almost surely result.
  • There is a set of implicit requirements that often goes unmentioned (e.g., the desire for ease of use). If software conforms to its explicit requirements but fails to meet implicit requirements, software quality is suspect.

So there is relationship. As we have measurement correct we will have solid requirements and on that at the quality will be fine

How do ensure that Metrics and mesasurements are correct?

There are two things to do for ensuring that these are correct.

  • Establish the objectives of measurement before data collection begins, defining each technical metric in an unambiguous manner.
  • Define a few metrics and then use them to gain insight into the quality of a software engineering work product.

What are the main steps of metric and measurement?

Here are the main steps.

  • Derive the software measures and metrics that are appropriate for the representation of software.
  • Data required to derive the formulated metrics are collected.
  • Once computed, appropriate metrics are analyzed on pre-established guidelines and past data.
  • The results of the analysis are interpreted to gain insight into the quality of the software, and the results of the interpretation lead to modification of work products arising out of analysis, design, code, or test.

What is software metric?

Software Metric
Software metric is measure of some property of a piece of software or its specifications.

It provides with quantitative information to make the process better by analyzing that information.