Data Science Interview Questions
Questions Answers Views Company eMail

Discuss artificial neural networks

95

Is it possible to capture the correlation between continuous and categorical variable?

114

why do you need to perform resampling?

84

What is a random forest?

103

How to determine the number of clusters in k-means clustering algorithm?

93

Discuss linear regression?

103

Which is the best suitable language among python and r for text analytics?

98

Differentiate between supervised and unsupervised learning?

95

What do you understand by bias, variance trade-off?

97

Explain reinforcement learning.

97

What do you understand by l1 and l2 regularization methods?

109

What are the differences between data science, machine learning, and artificial intelligence?

90

What do you understand by clustering?

91

Differentiate between regression and classification algorithms?

105

Explain the decision tree algorithm?

136


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Un-Answered Questions { Data Science }

What is a z test?

119


What do you do as a data scientist?

101


What are interpolation and extrapolation?

95


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.

111


What are the differences between data science, machine learning, and artificial intelligence?

90






Can you explain difference between data modeling and database design?

116


How will you impute missing information in a dataset?

117


Why do you need a for loop? How do you do for loops in python and r?

119


Explain how can you assess a good logistic model?

83


What are the types of biases that can occur during sampling?

109


Describe some assumptions considered important for linear regression?

80


Define a sql query?

100


Can you define feature vector?

93


How will you prove that the square root of 2 is irrational?

104


What are the various types of selection bias?

110