# Data Science Course In Bangalore

## What is Data Science?

**Data Science** comprises of different disciplines which include Statistics, Machine Learning, **Data** Analysis, Computer **Science**, and Research.

## Scope of Data Science

Being a Data Scientist is one of the hottest and trending career option of the decade. The demand for data scientists is huge, the number is said to be much higher than the available candidates. So, choosing data science as a career option has a lot of scope and **will** remain so in the **near** future.

## Data Science Course Eligibility

- Machine Learning
- Mathematical Modeling
- Statistics
- Computer Programming
- Databases

*Tools and Skills used in Data Science:*

**1. Data Analysis :**

- Skills : R, Python, Statistics
- Tools : SAS, Jupyter, R studio, MATLAB, Excel, RapidMiner

**2. Data Warehousing:**

- Skills : ETL, SQL, Hadoop, Apache Spark
- Tools : Infomatica/ Talend, AWS Redshift

**3. Data Visualization :**

- Skills : R, Python libraries
- Tools : Juptyer, Tableau, Cognos, RAW

**4. Machine Learning:**

- Skills : Algebra, ML Algorithms, Statistics
- Tools : Spark Mlib, Mahout, Azure ML sudio

## Data Science Course Prerequisite

Programming: You need to have the knowledge of programming languages like Python, Perl, C/C++,**SQL** and Java—with Python being the most common **coding language required** in data science roles.

## Data Science Course Syllabus in Bangalore

o Data mining

o Statistics

o Machine learning

o Information visualization

o Network analysis

o Natural language processing

o Algorithms

o Software engineering

o Databases

o Distributed systems

o Big data

## Data Science Course Batch Timings in Bangalore

## Data Science Course in Bangalore Course Duration

## Data Science Course Location in Bangalore

#### East Bangalore

Basavanna Nagar

CV Raman Nagar

Chintamani

Baiyyappanahalli

New Thippasandra

#### West Bangalore

Balepet

Avenue Road

Austin Town

Ashoknagar

Bharati Nagar

#### North Bangalore

HBR Layout

Hebbal

Jakkur

Hennur

Jalahalli

#### South Bangalore

Ashoknagar

Adugodi

Chickpet

Banashankari

Bannerghatta

## Data Science Course Certification in Bangalore

- Applied AI with DeepLearning, Data Science Certificate
- Certified Analytics Professional (CAP)
- Certified Associate: Data Analyst
- Certified Professional: CCP Data Engineer
- Data Science Council of America (DASCA)
- Data Scientist Associate (DCA-DS)
- Data Scientist Advance Analytics Specialist
- HDP Data Science
- Certified Data Architect
- Data Management and Analytics
- Azure Data Scientist Associate
- Professional Program in Data Science
- Advanced Analytics Professional
- Big Data Professional
- Data Scientist

## Data Science Job Openings in Bangalore

- Machine Learning Engineer
- DataEngineer
- Data Analyst
- Product Scientist
- Core Data Scientist
- Data Researcher
- Quantitative Analyst

## Interview Questions FAQ

**1. What is Data Science?**

Data Science is a combination of algorithms, tools, and machine learning technique which helps you to find common hidden patterns from the given raw data.

**2. What is logistic regression in Data Science?**

Logistic Regression is also called as the logit model. It is a method to forecast the binary outcome from a linear combination of predictor variables.

**3. Name three types of biases that can occur during sampling**

In the sampling process, there are three types of biases, which are:

- Selection bias
- Under coverage bias
- Survivorship bias

**4. Discuss Decision Tree algorithm**

A decision tree is a popular supervised machine learning algorithm. It is mainly used for Regression and Classification. It allows breaks down a dataset into smaller subsets. The decision tree can able to handle both categorical and numerical data.

**5. What is Prior probability and likelihood?**

Prior probability is the proportion of the dependent variable in the data set while the likelihood is the probability of classifying a given observant in the presence of some other variable.

**6. Explain Recommender Systems?**

It is a subclass of information filtering techniques. It helps you to predict the preferences or ratings which users likely to give to a product.

**7. Name three disadvantages of using a linear model**

Three disadvantages of the linear model are:

- The assumption of linearity of the errors.
- You can’t use this model for binary or count outcomes
- There are plenty of overfitting problems that it can’t solve

**8. Why do you need to perform resampling?**

Resampling is done in below-given cases:

- Estimating the accuracy of sample statistics by drawing randomly with replacement from a set of the data point or using as subsets of accessible data
- Substituting labels on data points when performing necessary tests
- Validating models by using random subsets

**9. List out the libraries in Python used for Data Analysis and Scientific Computations.**

- SciPy
- Pandas
- Matplotlib
- NumPy
- SciKit
- Seaborn

**10. What is Power Analysis?**

**11. Explain Collaborative filtering**

Collaborative filtering used to search for correct patterns by collaborating viewpoints, multiple data sources, and various agents.

**12. What is bias?**

Bias is an error introduced in your model because of the oversimplification of a machine learning algorithm.” It can lead to underfitting.

**13. Discuss ‘Naive’ in a Naive Bayes algorithm?**

The Naive Bayes Algorithm model is based on the Bayes Theorem. It describes the probability of an event. It is based on prior knowledge of conditions which might be related to that specific event.

**14. What is a Linear Regression?**

Linear regression is a statistical programming method where the score of a variable ‘A’ is predicted from the score of a second variable ‘B’. B is referred to as the predictor variable and A as the criterion variable.

**15. State the difference between the expected value and mean value**

They are not many differences, but both of these terms are used in different contexts. Mean value is generally referred to when you are discussing a probability distribution whereas expected value is referred to in the context of a random variable.

**16. What the aim of conducting A/B Testing?**

AB testing used to conduct random experiments with two variables, A and B. The goal of this testing method is to find out changes to a web page to maximize or increase the outcome of a strategy.

**17. What is Ensemble Learning?**

The ensemble is a method of combining a diverse set of learners together to improvise on the stability and predictive power of the model. Two types of Ensemble learning methods are:

Bagging

Bagging method helps you to implement similar learners on small sample populations. It helps you to make nearer predictions.

Boosting

Boosting is an iterative method which allows you to adjust the weight of an observation depends upon the last classification. Boosting decreases the bias error and helps you to build strong predictive models.

**18. Explain Eigenvalue and Eigenvector**

Eigenvectors are for understanding linear transformations. Data scientist need to calculate the eigenvectors for a covariance matrix or correlation. Eigenvalues are the directions along using specific linear transformation acts by compressing, flipping, or stretching.

**19. Define the term cross-validation**

Cross-validation is a validation technique for evaluating how the outcomes of statistical analysis will generalize for an Independent dataset. This method is used in backgrounds where the objective is forecast, and one needs to estimate how accurately a model will accomplish.

**20. Explain the steps for a Data analytics project**

The following are important steps involved in an analytics project:

- Understand the Business problem
- Explore the data and study it carefully.
- Prepare the data for modeling by finding missing values and transforming variables.
- Start running the model and analyze the Big data result.
- Validate the model with new data set.
- Implement the model and track the result to analyze the performance of the model for a specific period.

## Who should do Data Science Course

*Data science* is a field of Big Data which seeks to provide meaningful information from large amounts of complex data.

**Data Science** is a field that encompasses related to data cleansing, preparation, and analysis. Data science is an umbrella term in which many scientific methods apply. For example mathematics, statistics, and many other tools scientists apply to data sets. Scientist applies the tools to extract knowledge from data.