Interview Question

  Which of the following is correct with respect to residuals? a) Positive residuals are above the line, negative residuals are below b) Positive residuals are below the line, negative residuals are above c) Positive residuals and negative residuals are below ...

Which of the following tool is used for estimating standard errors and the bias of estimators? a) knitr b) jackknife c) ggplot2 d) all of the mentioned

Which of the following testing is concerned with making decisions using data? a) Probability b) Hypothesis c) Causal d) None of the mentioned

What are your interests? What salary are you expecting? Why do you want to join Postman?

How would you develop a category & make sure it grows WOW Why all could be the cause of revenue decrease for the E-Com company? and basic data analysis from the data set given. Getting around this (https://www.kaggle.com/allunia/e-commerce-sales-forecast ) data and finding the ...

Which of the following testing is concerned with making decisions using data? a) Probability b) Hypothesis c) Causal d) None of the mentioned   2. Which statement upgrades the database directory name encoding? a) ALTER DATABASE b) ALTER SERVER c) ALTER ...

Some questions from the HR Round.   Tell me about yourself. Can you describe a time when you needed to balance multiple projects? Previous experience, favorite project and what are you salary expectations , What are your projects related to job role u have ...

One interviewer asked me how I would build a classifier to predict the outcome of NFL games in real-time.  

Find the minimum number of coins required for a given amount with a given set of coins. Implement scalable top K words for Amazon product descriptions using count-min sketch. What is the computational complexity of finding the most frequent word in a ...

Suppose we have the following schema with two tables: Ads and Events Ads(ad_id, campaign_id, status) Events(event_id, ad_id, source, event_type, date, hour) Each ad can be active or inactive, and this is reflected in the status field.   There are different event types:   impression (ad is ...