Experimental data Definition and 69 Threads

Experimental data in science and engineering is data produced by a measurement, test method, experimental design or quasi-experimental design. In clinical research any data produced are the result of a clinical trial. Experimental data may be qualitative or quantitative, each being appropriate for different investigations.
Generally speaking, qualitative data are considered more descriptive and can be subjective in comparison to having a continuous measurement scale that produces numbers. Whereas quantitative data are gathered in a manner that is normally experimentally repeatable, qualitative information is usually more closely related to phenomenal meaning and is, therefore, subject to interpretation by individual observers.
Experimental data can be reproduced by a variety of different investigators and mathematical analysis may be performed on these data.

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  1. mishima

    Ideas for high school wind tunnel?

    Hi, I teach a high school Aerospace Engineering course. We have a small wind tunnel that can reach about 85 mph, and test objects roughly the size of a 3x5 notecard. It has a pitot tube and force scale. In the past we have constructed airfoils using their 4 or 5 digit NACA codes, then tested...
  2. J

    Where can I find chemistry experiments that are accurately described with the Dirac equation?

    Let's say we can solve the Dirac equation numerically with a powerful computer. What experiments do you recommend to take a look at to compare the result of the simulations with the real data. Maybe chemical reactions?
  3. ohwilleke

    A What New Experiments, If Any, Would Help Determine Light Quark Masses?

    The experimentally measured properties of protons and neutrons are known with exquisite detail. Our data is not quite as extremely precise, but still very good more other baryons and mesons with light quarks (u, d, and s) as valence quarks, such as pions and kaons. Yet, on a percentage basis...
  4. ohwilleke

    I Has photoproduction of gluons been observed?

    I am wondering if a process with an initial state of two photons leading to an end state with two (or more) gluons has been observed. I have seen some papers (like this one) that seem to suggest that this is the case, but none of them say so as clearly as I would like to be confident that this...
  5. A

    B It works but why? (Matching experimental data to a random equation)

    Hey guys, I've about a week left to submit my final paper for my trade degree in transportation. The paper is about an analysis of potential implementation of an electric car for direct deliveries in my area where I live. In part of it, I try to analyze how many possible trips a car like...
  6. J

    Michelson interferometer -- Plotting experimental data to determine t

    See attached images.
  7. quantumCircuit

    Lotka Volterra estimate parameters from experimental data

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  8. Admiralibr123

    I Looking for Experimental Data on Isotopes (Nuclear Physics and Engineering)

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  9. parazit

    I Comparing theoretical calculations with experimental data

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  10. person123

    MATLAB MATLAB Code For Analyzing Experimental Data

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  11. TachyonLord

    Why Are My Newton's Rings Experiment Results Inconsistent?

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  12. L

    MATLAB To what extent is the fit to experimental data good?

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  13. ohwilleke

    I How credible are CKM matrix limits on new physics?

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  14. Manav

    Calculating Charge Of Electron (Millikan Oil Drop Experiment

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  15. M

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  16. A

    A All experimental data for Super heavy nuclei

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  17. franciobr

    Python Python workflow for experimental data analysis

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  18. B

    I Data from a delayed choice quantum eraser experiment

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  19. R

    I Experimental Data - Error in slope

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  20. N

    I Bell's inequality experimental data

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  21. Killtech

    I How Can Multi-Particle Interference Help Clarify Quantum Mechanics?

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  22. C

    B Can I find experimental data for the decay of Iodine-131?

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  23. J

    A Where to find experimental data?

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  24. R

    Advice for representing experimental data

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  25. F

    Determining the rate law from experimental data

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  26. A

    B Experimental data of bremsstrahlung

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  27. sounouhid

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  28. R

    B Cosmic Ray Muons: Finding Experimental Data for Special Relativity

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  29. C

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  30. D

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  31. G

    Experimental data modelling off-road vehicle travel

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  32. SmritiB

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  33. Sir Bro

    Calculating half life from experimental data

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  34. E

    Comparison between CFD results and experimental data

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  35. B

    Velocity issues -- experimental data from an accelerometer and a gyroscope

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  36. jlefevre76

    Ray tracing vs. experimental data

    So, here's the deal: I'm trying to complete the publishing of a paper dealing with my thesis from almost two years ago, and I finally wrote a program that I believe will tell me how different geometries will influence the outcome. Here's the setup, I am modeling the radiation that goes through...
  37. C

    Fitting experimental data with exponential curve

    Hello! :-) I' have a problem... I fitted experimental data with a second order exponential theoretical curve: y = A1*exp(-x/t1)+ A2*exp(-x/t2) + y0 and I have these data for 4 repetitions of the same experiment: first time: Reduced Chi-Sqr = 6,81066E-4 Adj. R-Square = 0,41005...
  38. T

    Strange result from taking logs of logs in experimental data

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  39. R

    Can I use experimental data to solve equations with integrals?

    Hi, I don't know if this is the proper part of the forum to ask this, but I'm trying to figure out how I can obtain a certain value from an equation that contains an integral if I want to use experimental data. To keep it simple, the equation looks like this: B= (∫G(f)df)2 / (∫G(f)2df) where...
  40. P

    Rolling motion- experimental data differs from expectation

    Homework Statement An experiment was done to test the validity of the equation a = 2/3 g sin∅ for a rolling cylinder. A hockey puck was rolled down a wooden ramp at 5 different inclination angles, and the time it took to roll down the length of the board was recorded. ∅ was found using...
  41. S

    MATLAB MATLAB - Find the error on polynomial fit parameters of experimental data

    See attached PDF for details: How do I calculate errors on the fit parameters, p?
  42. A

    Find Transfer Function from Experimental Data

    I would like to find a useful function to predict the output based on the input. I'm trying to figure out how to get the transfer function given actual input and output data. What I've tried is getting a transfer function using Fourier transforms. I'm attemping to do a fft on both the input...
  43. M

    Deriving values from experimental data (algebra help)

    One more question - I'm working on a problem in which I need to determine the values of R and p in the equation: {E_{B} = -RZ^{2}n^{p}} Where Z is 1 (we're using a hydrogen atom), and n is the principle quantum number of the electron. I know p is 2, but the point of the exercise is the...
  44. K

    Exploring Redshift of Distant Galaxies - Experimental Data

    Why it's not explained just by Doppler redshift caused by faster movement of those galaxies billions of years ago when that light was emitted? Would the speeds of the galaxies necessary for Doppler redshift to explain all of the observed galaxies redshift be unreasonable or is there something...
  45. G

    How to find terminal velocity from experimental data?

    Homework Statement So I have a set of data, velocity and time, of a falling object. So the question is: how can I get the value for the terminal speed? Homework Equations Since we're talking about terminal velocity an ecuation that descrives a Velocity vs time graph should be of the...
  46. S

    Calculating Ksp of Ag2CrO4 from Experimental Data

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  47. D

    Experimental data on the extraction of radium/polonium?

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  48. A

    Where can I find experimental data

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  49. C

    Looking for empirical equation in experimental data

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  50. T

    Flat Back Trailing Edge Experimental Data

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