Warranty Management – Meaning and its Components
Warranty Management had been traditionally viewed by companies as a cost of doing business. The costs of warranty management were found to be costing between 4 to 5 percent of the total sales revenue of the company per annum and were considered to be the cost of providing customer satisfaction and as an opportunity to […]
Person Dependence in Organizations and Steps to Manage or Reduce the Same
Some Real World Examples of Person Dependence and its Perils A common problem across organizations in the contemporary corporate world is about person dependence and the ways and means to manage person dependence. The term person dependence refers to the phenomenon wherein the organizations are overly dependent on individuals for their success and even for […]
How A Private Money Market Would Work?
The past few generations have become used to money being issued by the government. Hence, there is an implicit assumption that maybe this has always been the case. However, this is not the case. Many people will be surprised to know that creating money was not always the job of the government. Private money was […]
What is China Plus Strategy and Why it Can Become a Game Changer for the Indian Economy?
How, China Known as the Factory of the World Is Losing Its Seen Due To the China plus Strategy China is known as the “factory of the world”. This is because it is the world leader in hosting manufacturing plants of Western multinationals, who have moved their offshore production facilities since the 1970s there, attracted […]
Behavioural Models for Project Managers
There are several models of behaviour that the project manager can draw upon in his or her work. These include Maslow’s need hierarchy theory, Herzberg’s Hygiene theory and McGregor’s theory X and theory Y as applied to project management. All these behavioural models point to the ability of the project manager to motivate the people […]
Apart from accuracy and precision, there are more factors that determine the soundness of a measurement system. Two of these important factors are as follows:
Resolution: Resolution is the ability to see fine details in a system. This ability also gives the system, the ability to distinguish different readings from one another.
A good example would be that of the system that records late coming employees. If the measurement system designed to monitor employees coming late measures it only in hours i.e. uses the wrong resolution, then any employee who is up to 59 minutes late will appear to be on time. This is because the system will display 0 till the 60th minute is reached. In effect the organization will lose its ability to distinguish between employees coming on time and those that come late.
A good thumb rule is to build an extra decimal place in the system. If you need data up to 2 decimal places, build a system that records data up to 3 decimal places. Wrong resolution can seriously hamper the process and lead to wrong decisions.
Linearity: A system is said to be linear if proportional changes in input measurements produce proportional changes in output measurement. This means that if I know for a fact that an employee coming 10 minutes late would lead to a 2% loss of productivity in his daily output, then the same employee if he comes 30 minutes late should ideally lead to a 6% loss in his daily productivity.
The method used to find out linearity is fairly simple. Any given measurement is considered, the input variables are varied in a controlled manner and the resultant output is recorded. It is essential that at least 10 measurements be taken throughout the possible range of measurement. These points are then charted on a graph and an attempt is made to fit a line through these points. The degree to which all the points lie on this line of best fit is the degree of linearity of a system.
The degree to which the points lie away from the line of best fit is called the bias of the measurement system. For instance, if a machine shows a more accurate measurement at the centre of its operating range than at the upper or lower ends then the equipment is biased.
Common reasons for measurements not being linear are as follows:
Your email address will not be published. Required fields are marked *
Characteristics of Data – Central Tendency and Dispersion
February 12, 2025
Steps Involved in Conducting a Measurement System Analysis
February 12, 2025
