Discussion and Conclusion

    Comparing the known value of the rest mass energy of electron, 0.511 MeV, to the experimental measurement, the values are consistent only due to the unrealistic uncertainties of the data. As the uncertainty is quite significant compared to the measurement, the only confirmation the data can provide is on the order of the magnitude, 10^-1 MeV. 
    For Klein-Nishina and Thompson's formula, the experiment is expected to abide by K-N formula when \(\gamma\ \ge\ 1\). Indeed, the experimental data  agrees with K-N although some data points are not included in the range of uncertainty. The issue might be that the chart referenced for total detection efficiency was too small for precise determination by hand while the efficiency had exponential increase in the energy level that corresponded to the range from 40 to 60 degree should have increased the uncertainty than it was gauged. In order to alleviate this issue, more precise tool for total detection efficiency determination could be used so that the experimental data can be compared in finer detail.