uncertainty about delta p

[Domenico Garofalo]

good evening boys, I am doing my internship with the prof of technical physics on forced convection and asked me to calculate the uncertainties on delta p (difference of pressure ing and usc of the test section to change n of reynold ). I have attached the values calculated below .
Moreover the tests were made with a device (transducer) which has the characteristics that I attached to you in photo.
you could help me in the calculation of uncertainty because I did not understand sincerely what kind of uncertainty the prof . thanks for the cordiality .

 

[Stan9411]

I didn't read the transducer card. However, you have a set of data to vary the number of reynolds. I would put them in excel, make them a linear regression (or parabolic according to which is the theoretical behavior that is being sought) and calculate the dispersion of the data compared to the obtained line.

In any case your professor is not questioning you, he should be there to advise you. I would ask him

 

[Domenico Garofalo]

the graphs of the delta p according to the reynolds already I have made them..I need to know what kind of uncertainty can I calculate? and how do you calculate?

 

[Domenico Garofalo]

here is the message sent to me by the prof.

 

[Stan9411]

bah he speaks of a range of uncertainty as if it were the one expressed by statistical variance. but that is calculated starting from a series of measurements all in the same conditions. . you instead various reynolds from time to time therefore every measurement has no statistical value than the previous ones. I repeat to myself the only uncertainty parameter derived from this data is the dispersion index. search it on google, it's a basic statistical thing.