Data Interview Question

Enhancing Multi-Platform User Experience

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Requirements Clarification & Assessment

To effectively enhance the multi-platform user experience, it's crucial to understand and address the following aspects:

  1. Data Structure Understanding:

    • Identify the key characteristics of the data tables, mobile_tbl and web_tbl, which include user_id and page columns.
    • Ensure clarity on the relationship between mobile and web users, especially regarding overlapping users who access both platforms.

  2. Objective Definition:

    • The primary goal is to gain insights into user behavior across platforms, specifically identifying unique users who access content exclusively on either mobile or web, and those who use both.

  3. Key Questions:

    • Determine the number of unique users accessing content only on mobile.
    • Calculate the proportion of users accessing content solely on the web.
    • Develop a query to find the percentage of users categorized as mobile-only, web-only, and both-platform users, ensuring the sum is 100%.

  4. Data Quality and Availability:

    • Verify that the data in both tables is up-to-date and accurately reflects user interactions.
    • Ensure there are no missing or duplicate entries that could skew the results.

  5. Constraints and Assumptions:

    • Assume that each user_id is unique across both tables.
    • Consider potential data privacy and security implications when handling user data.