Summary of Excel Skills

Jung Ki Lee

Summary of Experience in

Excel Report Modeling

Copyright © 2011, Author: Jung Ki Lee

B. Comm Candidate, 2013Accounting Specialist ProgramRotman Commerce,University of Toronto

Agenda

• The Spreadsheet: the model in general

• Part One: Graphing, Forecasting, Macros

• Part Two: Sensitivity Analyses

• Key Takeaways


The Spreadsheet

• Constructed an economic and financial model for the aluminum industry

• Disclaimer: The spreadsheet photos that follow are solely intended for a demonstration of my Microsoft Excel skills. None of the screen captures that follow are to be used for future academic assignments.

• Credit goes to my group members in helping me construct this model: Alana Stewart, Eva Fok



This model consisted of numerous sub-models which we applied a variety of microeconomic principles into Excel.Due to my superior knowledge of Excel, I lead the construction of 17 out of the 18 models in this assignment.

Part 1:Constructing Supply Models

Step-Charts and Macros

Price Forecasting



For this model, we were required to draw out a supply curve for the aluminum industry. Using concepts learned in class, we drew a step chart.

The hard thing about step charts is that there are no Excel functions that automatically draw one out for you.

Therefore, we had to manually lay out the data points for 156 smelters’ capacities across 12 different supply models.


Doing this would have meant inserting and copying the formula 157 times per model! And we had twelve of them.

One supply model

Solution: I Came up with a macro that can cut the laborious steps of inserting a row between each line.

And, with a clever bit of filtering, you can copy the formula needed to implement the step chart in minutes!

With teamwork and our shortcut, this saved us not hours, but DAYS worth of time in graphing these models.

To make the step chart, take raw data and insert a row between every other line and copy the formula that is the same x above and the same y below.No choice but to do it manually

Four more models off screen


With the aid of our instructor, we constructed a model for predicting prices. The notable thing here is that I constructed this with all calculations referencing back to the parameters indicated. Changing the parameters changed the entire calculations and the resulting graphs.

Part 2:Profit Sensitivity Analysis

Portfolio Allocation

Portfolio Sensitivity Analysis



Using economic principles learned in class, we applied a sensitivity analysis on profits.

The beauty of this model is that the user can play around with the scroll bar to see different results for the 157 smelters.This also updates the graph on the right as the scroll bar moves.

The formula used to derive values in these columns uses a complex double-if-statement in order to be consistent with the economic assumptions we made (and to save ourselves time from tailoring each formula to the firm’s attributes).


Eight of these models were constructed testing the sensitivity of each parameter in the maximization problem.Each parameter had its own intrinsic calculations that made it challenging.


Here I applied basic portfolio allocation learned in class. Using the scroll bar again, the user can play around with how risk-loving or risk-averse the investor is.

With some clever series adjustments, I made it so that the optimal allocation is highlighted against the possible allocations.This is so the investor can know where he or she is relative to the possible allocations.


In terms of calculations, this involves copious amounts of algebra and of all models, this was the most difficult one I constructed. Here, I perform another sensitivity analysis and, again, the user may play with the scroll bars to get an understanding of how sensitive their portfolios are.

Key Takeaways of my Achievements

• I have demonstrated teamwork in delegating tough, conceptual Excel jobs

• I showed my problem solving skills in finding shortcuts to do work faster and more efficiently

• While the models are complex, I always prioritize communication of the models to the audience

• I am a hard worker: over 80 hours went into this model alone in 3 weeks (with lectures, commuting, homework and conferences in between).


Thank you for your time!


Jung Ki LeeB. Comm. Candidate, 2013Accounting Specialist ProgramRotman Commerce,University of Toronto

Summary of Excel Skills

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