Sir

While checking an instrument the following is the observation

 

Now with this instrument a load is checked and the instrument measured 30.800 Tonns

How can I now estimate the actual weight measured.

 

Pls suggest

 

 

 

Hello Nagaraj

 

The image is not getting displayed. 

 

 

 

Hello Nagraj

 

You need to determine the accuracy of the measuring device. But looking at the image and the question, the weight 30.8 Tons seems to be very very high as compared to the actual standard weight range that was used (as per image). In such cases, gauge might suffer linearity failure.

 

 

 

the regression eqn is 

The regression equation is
observed = - 0.2340 + 1.128 actual

 

 

There seem to be a good correlation between your standard weight and actual observations. So in the interim you could use the regression equation to arrive at the correct weight. However in the long run, take multiple readings with the same standard weight, compute the mean and standard deviation and if the standard deviation is high, calibrate your weigh scale. Also establish a periodical weigh scale testing / calibration schedule to avoid dispatching excess due to the weigh scale error and losing out revenues.