Data Scientist Trainee Interview Questions and Answers

A riddle about a restaurant bill that confuses total payments and refunds.

• The friends initially paid $30, then received a $5 discount.

• After the discount, they paid $27 ($30 - $5).

• They kept $3 ($1 each) and tipped the waiter $2.

• The $27 includes the $2 tip, so the total is accounted for.

To find the second smallest number, iterate through the list while tracking the smallest and second smallest values.

• Initialize two variables, 'smallest' and 'secondSmallest', to infinity.

• Iterate through the list of integers.

• For each number, update 'smallest' if the number is less than 'smallest'.

• If the number is between 'smallest' and 'secondSmallest', update 'secondSmallest'.

• Return 'secondSmallest' after the loop ends.

• Example: For the list [-1, -3, -2, 0, 2], the second smal...read more

Mu Sigma is a data analytics and decision sciences company that helps organizations make data-driven decisions.

• Mu Sigma was founded in 2004 and is headquartered in Chicago, Illinois.

• They provide services in areas such as marketing analytics, supply chain analytics, and risk analytics.

• Mu Sigma has worked with Fortune 500 companies across various industries to help them leverage data for better decision-making.

• The company uses a proprietary platform called muApt for analytics a...read more

Video analysis involves summarizing the content of a video in bullet points.

• Identify key themes or topics discussed in the video

• Highlight important events or moments

• Note any key statistics or data presented

• Summarize the main conclusions or takeaways

• Include any notable visuals or graphics shown