Quality Cost Analysis:

Main types of Costs Associated with Software

Products

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Quality Cost Analysis

Quality costs are the costs spent on preventing, finding and fixing incorrect work. These costs take up 20-30% of sales. But you can decrease or completely avoid the consumptions. One of the primary duties of a Software Tester is the reduction of the total cost of quality related with a product.

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Types of costs, associated with software products:

Prevention Costs1

Appraisal Costs2

Failure Costs3

Total Cost of Quality4

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Prevention Costs

Costs of preventing coding and design bugs, errors in the user manuals, bad documentation or inapplicable code. Most of the prevention costs are wasted from the budget of the programming, design, and marketing group but not Testing.

The most widespread examples of quality costs associated with software products are:

training of the staffrequirements and usability analysisearly prototypingfault-tolerant designdefensive programmingaccurate specification and internal documentationevaluation of the reliability of the product.

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Appraisal Costs

Costs which are aimed for design review, code inspection, test automation, pre-release of customers, training testers and glass box, black box, beta and usability testing.

Design reviews are used for averting and evaluation. When you're looking for errors in the design, you're doing an evaluation and when you're looking for ways to strengthen the design, you are doing averting.

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Internal Failure Costs

Failure Costs

External Failure Costs

Failure costs emerged before providing products to the customers. If errors block the work of somebody in the company, the costs of the wasted time, the missed points, and the overtime to get back onto the original scheme are all internal failure costs.

Failure costs emerge after the supplying of product to the customer.

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Internal Failure Costs

There are such Internal Failure Costs:

bug fixes regression testing wasted user testers and marketers time wasted advertisements direct and potential costs of a late dispatch.

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External Failure Costs

They are costs of:

preparation of support documentation technical calls investigation of customer complaints refunds and recalls coding and testing of interim releases dispatch of updated product supporting multiple versions discounts to stimulate resellers to keep selling the product warranty and liability costs government investigations and others.

Office in UkrainePhone: +38(044)501-55-38E-mail: contact (at) qa-testlab.comAddress: 154a, Borschagivska str., Kiev, Ukrainehttp://qatestlab.com/

Total Cost of Quality

It is calculated as the sum of all costs:

Prevention + Appraisal + Internal Failure + External Failure.

Office in UkrainePhone: +38(044)501-55-38E-mail: contact (at) qa-testlab.comAddress: 154a, Borschagivska str., Kiev, Ukrainehttp://qatestlab.com/

Office in UkrainePhone: +38(044)501-55-38E-mail: contact (at) qa-testlab.comAddress: 154a, Borschagivska str., Kiev, Ukrainehttp://qatestlab.com/