---
# System prepended metadata

title: data case practice guide

---

# data case practice guide 

### sample questions:


- bank called us to help improve their business or help on fraud, what would you do and what data to collect

- manafuter company asked us to help on using data to improve their business 

-  the maintenece cost of an airline company is high, lots of problem for the aircraft, how would you use data to solve this problem?
    -  how would you quantify the result 

- a bank called us to design a  money laundering algo 
    1. what data you will collect and how will you design it?
- A payments processor wanted you to help increase revenue from small and medium merchants 
8. use data to help pharmacutical company to gain market share
- allocate resource of covid outbreak 
    1. quantfiy the impact and disease transmission

- a disease, how would you identify patients for treament and what data will you use
    - if not in system, how do you identify them

- reduce traffice

    -  City - - - |- - - | - - - | - - - | - - - | - - -  Suburbs


    - toll system: every entry point there is toll station (|) and from city to suburbs

    - problem: a lot of traffic jam 
    - analyst for the city
    - create algoth change the price in real-time (parameters) to reduce the traffic


    cover:
    1) Data
    2) Insights / Metrics
    3) Algorithm
-------------------


### questions to included during interview


1. what data you want to collect and write it down in row/columns 
2. alternative data
3. what metrics will you use 
4. how would you use data to 
    1. idenfiy users / cohort 
    2. improve business 
    3. build model


### things to be included

1. push me to brainstorm more solutions when I finish one 
    - ex) what more do you have
3. ()be impatient and stress test



### what I want to improve


- when I am anxios or not sure how to answer, still able to calm down and express my opinion well 

- imprvoe how I talk
    - with complex thoughts ( long sentences)
        - able to break it dwon and pause, ask HM's opinion on the direction to go and engage her 
    - when panic, not sure how to answer
        - pause and see if I can come up with new idea
        - proactively further refine the problem
            - any constraint or can I consider this scenario 
        - know how to answer
            - structure better in a way ppl can easily consume your thoghts 
                - rephrase the problem, main idea, then supporting sentneces

- about data
    - write it down in a systematic approach then brainstomre
        - a. process
        - b. object
        - c. view
    - in columns/raws 


- the intuition to understand the heart of the problem
    - from a very broad scenario, able to step-by-step understand the heart of the question 
        
        
        
- stuructre to follow answer
    - instead of having an ultimate answer in mind, try to got step-by-step and work with the HM on this journey togehter

- be more collaborative
    -  try to tell them the idea you had and ask what they think and which direction will they choose ( but provide your opinion on which direction is better before asking them)
        -  by doing so, you help them feel more engaged
        - saying which direction to go and your reason makes you sound somoene has his own opinion and willing to listen/collaborate
