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Yoshops Data Science Interview Questions and Answers
Yoshops Data Science Interview Experiences
1 interview found
Yati
Selected
I was interviewed in Feb 2023.
(2 Questions)
- Q1. What is cluster?
- Ans.
A cluster is a group of data points or objects that are similar to each other within the group and dissimilar to data points in other groups.
Clusters are formed based on the similarity of data points within the group.
Clustering is an unsupervised learning technique used in data science.
Examples of clustering algorithms include K-means, hierarchical clustering, and DBSCAN.
- Q2. What is data preprocessing
- Ans.
Data preprocessing is the process of cleaning, transforming, and organizing raw data before analysis.
Removing irrelevant or duplicate data
Handling missing values
Normalizing or standardizing data
Encoding categorical variables
Feature scaling
Data transformation (e.g. log transformation)
Data reduction (e.g. PCA)
Handling outliers
Skills evaluated in this interview
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Interview questions from similar companies
Vijaya Lakshmi Somu
I applied via Referral and was interviewed before Jun 2023. There were 2 interview rounds.
(2 Questions)
- Q1. Different type of metrics for regression
- Ans.
Different metrics for evaluating regression models
Mean Squared Error (MSE)
Root Mean Squared Error (RMSE)
Mean Absolute Error (MAE)
R-squared (Coefficient of Determination)
- Q2. Explai how neural network works
- Ans.
Neural networks are a type of machine learning algorithm inspired by the human brain, consisting of interconnected nodes that process information.
Neural networks consist of layers of interconnected nodes, with each node performing a simple mathematical operation.
Information is passed through the network via weighted connections between nodes, with the weights adjusted during training to optimize performance.
Neural netw...
(1 Question)
- Q1. Given some python coding
Skills evaluated in this interview
Anonymous
I applied via LinkedIn and was interviewed before Sep 2023. There were 2 interview rounds.
3 hour oa - binary search , graph , dp
(2 Questions)
- Q1. What is object orinted programing ?
- Ans.
Object-oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.
Objects are instances of classes, which define the structure and behavior of the objects.
Encapsulation, inheritance, and polymorphism are key principles of object-oriented programming.
Examples include Java, C++, and Python, which are popular object-oriented programming languages.
- Q2. Write sql query for the bank transaction ?
- Ans.
SQL query to retrieve bank transactions data.
Use SELECT statement to retrieve data from transaction table.
Filter data based on account number or transaction date.
Group data by transaction type or amount for analysis.
Skills evaluated in this interview
Sibankar
I was interviewed before May 2023.
(1 Question)
- Q1. Basic sql and data science related
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