Preview Questions Data Analyst | Role Specific Skill

Question 1: In a financial database, how would you handle and optimize the storage of time-series data for analysis over several years?

Which action should you take?

Choose only one option

Use indexes on timestamps to speed up queries

Store all data in a single table without any partitioning

Use partitioning based on date ranges

Use a document-based database for time-series data

Question 2: When dealing with high-volume transactional data, how do you ensure that your database schema can handle complex relationships?

Which action should you take?

Choose only one option

I use normalization to avoid data redundancy and ensure that relationships are clear and manageable

I create multiple schemas to avoid complex relationships

I create a denormalized schema for simplicity and performance

I ignore relationships and store all data in one large table

Question 3: When implementing a backup strategy for a financial database, which type of backup is most effective in ensuring minimal data loss during recovery in the event of a failure?

Which action should you take?

Choose only one option

Differential backup

Incremental backup

Full backup

Snapshot backup

Question 4: How do you perform "Hypothesis Testing" to compare the performance of two financial products with different interest rates?

Which action should you take?

Choose only one option

I use descriptive statistics and assume the differences are significant

I run a chi-square test for categorical data without considering the assumptions

I rely solely on visual inspections and don't use formal statistical tests

I use a t-test or ANOVA to compare the means of the two groups and determine if the difference is statistically significant

Question 5: In a risk analysis scenario for BFSI, how do you assess the extreme value of a dataset?

Which action should you take?

Choose only one option

By calculating the Value at Risk (VaR)

By using standard deviation

By identifying outliers using IQR

By applying skewness and kurtosis

Question 6: Which of the following methods is most suitable for identifying long-term trends in the performance of a financial portfolio?

Which action should you take?

Choose only one option

Moving average

Exponential smoothing

Seasonal decomposition

Linear regression