퀀트 스터디노트

【Consulting Case】Restaurant (4) : Breakdown by Periods

Recap In the following posts, I will illustrate how the processed data were used for internal analysis, particularly to extrapolate information necessary to set up future operational strategies. 2020/07/14 - [Research & Analysis/Financial Modeling] - 【Consulting Case】Restaurant (3) : Monthly Snapshot 2020/07/13 - [Research & Analysis/Financial Modeling] - 【Consulting Case】Restaurant (2) : Explor..

Analysis/Consulting & Financial Modeling 2020. 7. 14. 16:12

【Consulting Case】Restaurant (3) : Monthly Snapshot

Recap In the last post, I went over how we improved the accounting and financial reporting processes. Then, I used the processed data to visualize the sales trend with breakdown by product groups and products. 2020/07/13 - [Research & Analysis/Financial Modeling] - 【Consulting Case】Restaurant (2) : Exploratory Analysis 2020/07/13 - [Research & Analysis/Financial Modeling] - 【Consulting Case】Rest..

Analysis/Consulting & Financial Modeling 2020. 7. 14. 15:51

【Project Euler】Q1. Multiples

Question 1. If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6, 9. The sum of these multiples is 23. Find the sum of all the multiples of 3 or 5 below 1000. Answer target = 1000 mult3or5 = [] for i in range(target): while i*3 < target and i*3 not in mult3or5: mult3or5.append(i*3) while i*5 < target and i*5 not in mult3or5: mult3or5.append(i*5) print(sum(mult..

Coding/Python 2020. 7. 14. 12:45

【Consulting Case】Restaurant (2) : Exploratory Analysis

Recap In the last post, I introduced how my friend and I reworked on how POS system's transaction-level data to create financial statement. 【Consulting Case】Restaurant (1) : Accounting 【Financial Modeling】Consulting Case : Restaurant (0) Background In 2018, I received a call from a friend who started a restuarant business funded primarily by a single private investor. My friend.. quant-curiosity..

Analysis/Consulting & Financial Modeling 2020. 7. 13. 16:22

【Consulting Case】Restaurant (1) : Accounting

【Financial Modeling】Consulting Case : Restaurant (0) Background In 2018, I received a call from a friend who started a restuarant business funded primarily by a single private investor. My friend was awaiting the next phase of seed fund from the inve.. quant-curiosity.tistory.com The first step was to review how the sales accounts were being handled. When I first received the ways he dealt with ..

Analysis/Consulting & Financial Modeling 2020. 7. 13. 15:35

【Calculus & Algebra】Limits & Derivatives

Basics of Derivatives Derivative: Let $y=f(x)$, then $$f'(x) = \frac{dy}{dx} = lim_{\Delta x \to 0} \frac{f(x+\Delta x) - f(x)}{\Delta x}$$ The Product Rule: If $u=u(x)$ and v=v(x) and their respective derivatives exist, $$\frac{d(uv)}{dx} = u \frac{dv}{dx} + v \frac{du}{dx}, (uv)' = u'v + uv'$$ The quotient rule: $$\frac{d}{dx}(\frac{u}{v}) = \cfrac{(v\frac{du}{dx}-u \frac{dv}{dx})}{v^2}, (\fra..

Study Note/Quantitative Methods 2020. 7. 13. 14:04