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Human Responsibility - Quality
Quality
• Qualitative and
quantitative testing
– Coming up in this unit
– Qualities in designing
– Quantities when
designing
– Testing
Quality
• Qualitative and quantitative testing
– What is the root of qualitative testing?
• What qualities do designers look for in
products?
• If a product is of good build quality what
does that mean?
Quality
• What is the root of qualitative testing?
– Qualitative has a root of quality
– Quality is defined as:
• Subjectively, something might be good because it
is useful, because it is beautiful, or simply because
it exists. Determining or finding Quality therefore
involves an understanding of use, beauty and
existence - what is useful, what is beautiful and
what exists. The usefulness aspect is reflected in
the common usage of quality. Wikipedia
Quality
• What is the root of qualitative testing?
– In the vernacular, quality can mean a high
degree of excellence (“a quality product”), a
degree of excellence or the lack of it (“work of
average quality”)
• How can quality be measured?
• How can build quality be measured?
Quality
• How can quality be measured?
– Since quality applies to the appreciation of the
look of a product, or the way it is built then
“beauty is in the eye of the beholder”
– Testing a product for quality will produce a
subjective result.
– I may like something you may not.
• How do designers cope in this situation
Quality
• How do designers cope in this situation?
– Dot sticking for ideas
– Defining aspects of designs that people like
• E.g. do you like the colour?
– Turning subjectivity into data by counting
responses
– Creating a average opinion
– Reacting to consumer demands
Quality
• Qualitative Test
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Like
Opinion
Subjective
Preferences
• Open ended
responses
• Quantitative Tests
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Measurable
Speed
Size
Weight
Voltage
• Parameters
Quality Control and
Quality Assurance
Quality CONTROL
• Manufacturing
– All of the tests carried when making a product
– Included calibrating the test equipment
– Records kept of the tests carried out
– Certification awarded for adhering to standard
methods of testing
– Results in providing Quality Assurance
Quality ASSURANCE
• Manufacturing
– Proof that the tests have
been carried out
– Proof that an acceptable
number of products have
passed the tests
– Proof that equipment has
been regularly calibrated
– Certification gained to
prove the QA processes
are regularly checked.
– QA used as a marketing
tool, and gives customer
faith product is of good
quality
ISO 9000
• Business implications
– ISO 9000 is a family of standards for quality
management systems. ISO 9000 is
maintained by ISO, the International
Organization for Standardization and is
administered by accreditation and certification
bodies.
• The organisation of the workforce can be
quality assured by adhering to ISO9000.
ISO 9000
• Some of the requirements in ISO 9001
(which is one of the standards in the ISO
9000 family) include
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a set of procedures that cover all key processes in the business;
monitoring processes to ensure they are effective;
keeping adequate records;
checking output for defects, with appropriate and corrective
action where necessary;
– regularly reviewing individual processes and the quality system
itself for effectiveness; and
– facilitating continual improvement