What are the criteria for measuring the quality of the product?

I fully stand with the answers Mr. Fazlur Rahman<<<<<<<<<<<<<<<<>

To measure quality of a product precisely, we may use the following criteria:

1.     The product serves its intended purpose effectively.

2.     The users of the product are fully satisfied and describe the product features with a smiling face

3.     The product carries ISO or GMP certification

4.     The product carries standard warranty conditions. 

5.     The product incorporates update technology and user friendly

Fully agree with Md. Fazlur Rahman answer

I agreed with the experts answer................................

Top on the line must be:

1.       The product must be according to customers order description or specifications

2.       The product must be according to the company’s product offer condition, this is communicated to clients or customers at time of sales & marketing campaigns

Whereas, when above are met, the standard is audited by auditing bodies, like ISO, QC Approved, Environmentally Friendly, SAFE, Certified Product Quality, FSC, Natural %, etc., etc.

And clients or customers are only buying your products if and only if your product has above standard seal or logo.

These are the criteria for measuring quality of any products.

by :

Customer Feedback

Product price

product benefits

comparing the product quality with the other products

the costs of making this product

amount of sales

Agree with Mr. Rahman..................

Thanks for the invite.

I agree with experts answers.

In my experience, most Engineering and Quality Assurance organizations use “Open defects” as the measure of quality. The rationale is that these are known defects in the product, and thus are defects customers could run into. The lower this measure, then the less likely customers are going to run into issue, hence the quality of the product is better.

I think that using the open defect count as your measure of product quality is flawed for several reasons:

• It is an internal metric that can be totally manipulated by Engineering without affecting the customer experience. For example, consider two Engineering teams: Both are receiving 10 new defects each day. Engineering team 1 fix some % of the incoming defects. Engineering team 2 fixes every incoming defect. Is the quality of product 2 better than product 1? I’d say “no” because the customers of both teams are still finding and reporting defects at the same rate when using the product.
• In most software companies, defects come in faster than they can be fixed, so there is always a tradeoff between bug fixing and new feature development. Your product quality may be improving yet due to priorities set by Product Management, the open defect count could still be rising
• Executives generally want to improve product quality for two reasons: One is provide a better customer experience. The second is to improve internal productivity – the more time your Engineering team spends on fixing defects means less time for developing new functionality. Measuring open defect count doesn’t indicate any improvement in support costs. In the example above, Team 1 is actually more productive at producing new functionality than Team 2 yet their open defect metric is likely to be rising.

I believe strongly that the correct way to measure product quality is to measure the rate at which customers are filing defects. This metric correctly represents how often your customers are experiencing defects in your product, and the measure is independent of internal influences such as bug fix rates etc.

Metric Calculation

Simply measuring incoming defect rates is not accurate, since we all know that defects have different severities, and a defect found by only one customer is more important than a defect that many customers are tripping over. So it is important to adjust the incoming defects by:

• The severity. For example assign a weight of 20 to the sev1, 10 to sev2, 5 to sev3, 2 to sev4, and 1 to sev5
• Capturing on those defects reported by customers. It should not include internally-found defects.
• The number of customers that report the defect. Multiply the weight by the number of customers that report the defect

This gives a weighted incoming defect rate that can be measured as:

Quality(forPeriod) = SummationOfDefectsReportedDuringPeriod( SeverityWeightOfDefect * NumCustomersReportingDefect)

Typically, I like to track this metric weekly, but you need to find the cadence that works best for your business. I also calculate a 6 week rolling average to help flatten out the peaks/troughs in the weekly rate and to also provide a better indication of longer-term trends.

Below is an example of what the metric might look like in practice. Blue represents the weekly rate and red indicates the rolling average. By viewing the red line, you can see how quality initiatives put in place during the last year of the program significantly reduced the incoming defect rate.

Thanks for the invite ............................ proportion of sales and consumption

I agree with Md. Fazlur Rahman , thanks for the invitation