Bayesian data analysis methods

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1. You’re in the wealth management division of the Patriot Bank. Your client just asked you to estimate the “beta” (i.e., the statistical association with
the ‘market”) of her favorite stock, Acme. Your bank’s convention is to use daily returns of the S&P 500 as the surrogate of the market, and the daily
returns of 4-week US T-bills as the risk-free rate.
Your coworker has downloaded more than 2 years of daily returns from Acme and the S&P 500, as well as the closing price of 4-week US T-bills. She partially
prepared the data by subtracting the daily T-bill rates from the both the Acme and S&P 500 return; thus, leaving you the set of excess daily returns for both
Acme and the S&P 500 (see the “acme.csv” file). The returns are reflected as decimals (not in terms of percentages).
a. Perform a qualitative exploratory analysis of the data.
b. Perform a regression of Acme’s daily excess returns as a function of the S&P 500’s daily excess returns. Report your results of Acme’s beta.
c. Perform diagnostic checks. At a minimum, produce a stan plot, trace plot, pairs plot, and density plots. Submit those plots.
d. Perform posterior predictive checks to validate your model.
e. Create a scatterplot of the excess returns of Acme as a function of the excess returns of S&P 500. Add a linear regression function (i.e., a straight
line) to your plot that represents the average statistical relationship between the firms’ daily returns.

Radiation test of CT scan is performed to determine the amount of radioactive waves emitted from CT scan. This test is an essential for all the workers inside the laboratory due to the harmful emitted waves.
The test done by the lab engineer using a special device that measures the emission of radiation waves.

Recommendations
I have noted during the test that some works do not have enough idea about the risks of radiation waves and they do not wear a special lab costume that prevent them.
My own feeling on the subject is that there should be some rules and actions taken by the responsible person in order to maintain the safety of employees also educate the staffs about the risks of radiation waves.
5.4 Oil spill
The department safety manager performed a task of Oil spill, the oil was spilled on the ground without informing any of the workers in order to test the ability of employees in dealing with various safety situations.What’s more, the manager discus around the safety issues as well as the accidents that can be cussed by oil spill and the correct way of how to deal with similar situations in future.
Recommendations
The task was completed in a useful way and improve the workers knowledge about safety in the work place.
In contrast, while running the task the safety equipment was not found in the proper place also some workers do not have a complete idea of using the equipment.
In my opinion, the department should assign some workers to check the safety gear monthly also place it in its proper place to avoid any misbehaver.

Conclusion

10.

In summery the six weeks of internship program has been an interesting experience in Weatherford labs. The training program is mainly to enable the students to apply all the theatrical and practical knowledge in real world to meet the industrial needs.
Being in different sections throughout the internship program with multi tasks assigned to the trainee for different purposes is help the trainee to improve all the soft and hard skills as well as gaining new experience and knowledge in various tasks that are related to trainee studies or in other fields that are semi related.
Moreover, this internship program also include several activities in safety which was a great opportunity to learn different safety situations in the work place and the suitable way to deal with.
All in all, this internship program increase my theoretical as well as practical knowledge in several topics related to my studies which be helpful to me in future works and studies.
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