You are provided with a csv file containing annual financial data for firms. Three important columns: fyear = fiscal year; tic = firm ID, ni = net income.

by | Sep 23, 2021 | Uncategorized | 0 comments

You are provided with a csv file containing annual financial data for firms. Three
important columns: fyear = fiscal year; tic = firm ID, ni = net income. Using this information,
you shall answer the following questions and the other requirements that follow the questions:
1. Overall, what is the effect of the crisis in financial terms? You can answer this by
calculating the percent by which average annual net income decreases for firms during
crisis years (2007-8) compared to pre-crisis years (2004-6).
2. What are the 10 firms with the largest and smallest changes respectively? List results for
absolute change and percent change separately.
3. How long does it take for firms to recover from the crisis? You can follow the following
algorithm. For each firm in the sample, identify the highest Net Income in the pre-crisis
period. Focusing now on the post-crisis period of 2009-14, identify when this highest
level was breached and set the variable ‘YearsRecover’ equal to the difference between
year level breached and 2008. If the highest level was not breached, set ‘YearsRecover’
to NA. Summarize this information in a table.
Show key steps in your work and be sure to demonstrate proficiency in dplyr or data.table or
both. Also, produce a data-supported overall conclusion concerning the effect of the crisis on
corporate profits.
Use Markdown skills to format the report appropriately. Recall that a formal report has
components such as introduction, body, and conclusion, and is labelled and formatted
appropriately.

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