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Data Science Interview Questions
Questions Answers Views Company eMail

What will you do if removing missing values from a dataset cause bias?

Airbnb,

116

How can you reduce bias in a given data set?

Airbnb,

124

How will you impute missing information in a dataset?

Airbnb,

117

Estimate the probability of a disease in a particular city given that the probability of the disease on a national level is low.

Amazon,

119

How will inspect missing data and when are they important for your analysis?

Amazon,

155

How will you decide whether a customer will buy a product today or not given the income of the customer, location where the customer lives, profession and gender? Define a machine learning algorithm for this.

Amazon,

107

From a long sorted list and a short 4 element sorted list, which algorithm will you use to search the long sorted list for 4 elements.

Amazon,

118

How can you compare a neural network that has one layer, one input and output to a logistic regression model?

Amazon,

116

How do you treat colinearity?

Amazon,

108

How will you deal with unbalanced data where the ratio of negative and positive is huge?

Amazon,

112

What is the difference between Stack and Queue

Amazon,

142

What is the difference between Linkedin and Array

Amazon,

109

You are about to get on a plane to Seattle, you want to know whether you have to bring an umbrella or not. You call three of your random friends and as each one of them if it's raining. The probability that your friend is telling the truth is 2/3 and the probability that they are playing a prank on you by lying is 1/3. If all 3 of them tell that it is raining, then what is the probability that it is actually raining in Seattle.

Facebook,

111

You have been given the data on Facebook user's friending or defriending each other. How will you determine whether a given pair of Facebook users are friends or not?

Facebook,

119

Estimate the number of square feet pizza's eaten in US each year.

Goldman Sachs,

114

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Un-Answered Questions { Data Science }

What is data science? How would you say it is similar or different to business analytics and business intelligence?

87

How will you test a machine learning model for accuracy?

98

Explain the steps for a data analytics project

110

what the aim of conducting a/b testing?

96

Explain each data visualization in detail?

102




Can you explain root cause analysis?

88

Please explain eigenvectors and eigenvalues?

83

Explain interpolation and extrapolation?

92

Name the packages that are based on density based on the algorithm?

95

Can you define feature vector?

91

Can you explain collaborative filtering?

113

If you had to choose between the programming languages r and python, which one would you use for text analytics?

103

You have two sorted array of integers, write a program to find a number from each array such that the sum of the two numbers is closest to an integer i.

113

How would you say data science is similar or different to business analytics and business intelligence?

96

What is meant by binomial distribution?

152

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