VMock Data Scientist Interview Questions and Answers

Q1. Sub array with specified Sum, consider all positive elements
Ans. 
Find subarray with specified sum using only positive elements
• Iterate through array and keep track of current sum and starting index

• If current sum exceeds specified sum, remove elements from the start of subarray

• Continue until end of array is reached or specified sum is found
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Q2. Some basic Data science questions
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Q1. General ML/DL questions
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Q1. Questions around python
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Python related coding questions

Q1. Explain about logistic regression
Ans. 
Logistic regression is a statistical model used to predict the probability of a binary outcome based on one or more predictor variables.
• Logistic regression is used when the dependent variable is binary (0/1, True/False, Yes/No, etc.).

• It estimates the probability that a given input belongs to a particular category.

• The output of logistic regression is a probability score between 0 and 1.

• It uses the logistic function (sig...read more
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Q2. What is decision tree
Ans. 
A decision tree is a flowchart-like structure in which each internal node represents a test on an attribute, each branch represents the outcome of the test, and each leaf node represents a class label.
• Decision tree is a popular machine learning algorithm used for classification and regression tasks.

• It breaks down a dataset into smaller subsets based on different attributes and creates a tree-like structure to make deci...read more
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