Data Interview Questions

132,929 data interview questions shared by candidates

Suppose you have a list of strings, each of which is an English sentence. # Output a dictionary out_dict that maps a key n to the list of words that occur in n different sentences. # E.g. # Input: str_list = [ “The cat ate the fish”, “The cat saw the roses”, “The roses are red” ]
avatar

Data Scientist

Interviewed at Amazon

3.5
Jun 3, 2021

Suppose you have a list of strings, each of which is an English sentence. # Output a dictionary out_dict that maps a key n to the list of words that occur in n different sentences. # E.g. # Input: str_list = [ “The cat ate the fish”, “The cat saw the roses”, “The roses are red” ]

case study: credit card insurance profit per customer cost of mailing $0.5, response rate 1%, average balance per month $1000, insurance charges 1% of average balance monthly, customer claim rate 5% (once insured customer files a claim, the balance will be wiped and C1 lose $1000). Question: profit per customer, graph claim rate vs response rate, graph profit vs response rate and find the response rate for maximum profit (r=1%)
avatar

Senior Data Analyst

Interviewed at Capital One

3
Apr 28, 2011

case study: credit card insurance profit per customer cost of mailing $0.5, response rate 1%, average balance per month $1000, insurance charges 1% of average balance monthly, customer claim rate 5% (once insured customer files a claim, the balance will be wiped and C1 lose $1000). Question: profit per customer, graph claim rate vs response rate, graph profit vs response rate and find the response rate for maximum profit (r=1%)

Most unexpected question was along the lines of this: You are called to a director's office to trouble shoot his Unix box, when you arrive you are shown the machine by his admin who tells you it was working last night before they left for the evening. When you move the mouse it does nothing at all, no sound, no display - what do you do first?
avatar

Data Center Tech

Interviewed at Cisco

4.1
Sep 28, 2012

Most unexpected question was along the lines of this: You are called to a director's office to trouble shoot his Unix box, when you arrive you are shown the machine by his admin who tells you it was working last night before they left for the evening. When you move the mouse it does nothing at all, no sound, no display - what do you do first?

Viewing 361 - 370 interview questions

Glassdoor has 132,929 interview questions and reports from Data interviews. Prepare for your interview. Get hired. Love your job.