Analyst Intern Interview Questions and Answers for Freshers

Bagging and boosting are ensemble learning techniques used to improve the performance of machine learning models by combining multiple weak learners.

• Bagging (Bootstrap Aggregating) involves training multiple models independently on different subsets of the training data and then combining their predictions through averaging or voting.

• Boosting involves training multiple models sequentially, where each subsequent model corrects the errors made by the previous ones. Examples inc...read more

The number of credit cards in India can be estimated based on population, income levels, banking penetration, and consumer spending habits.

• Estimate based on population size and percentage of population with access to banking services

• Consider income levels and consumer spending habits to gauge demand for credit cards

• Look at the number of active credit card users in India and extrapolate to estimate total number of credit cards

• Take into account the growth rate of credit card us...read more

Analysts gather, interpret, and present data to help organizations make informed decisions.

• Analyze data to identify trends and patterns

• Create reports and presentations to communicate findings

• Provide recommendations based on data analysis

• Use tools like Excel, SQL, and Tableau for data analysis

• Work closely with stakeholders to understand business needs

Python has many built-in functions that can be used without importing any module.

• Built-in functions are pre-defined functions in Python.

• They are always available and can be used directly in the code.

• Examples include print(), len(), range(), type(), etc.

OOPs stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects, which can contain data and code.

• OOPs focuses on creating objects that interact with each other to solve problems

• It involves concepts like classes, objects, inheritance, polymorphism, and encapsulation

• Example: In a banking system, you can have classes like Account, Customer, and Transaction, each with their own properties and methods

Literals are fixed values in Python code, such as numbers, strings, and booleans.

• Literals are used to represent data in a program.

• Numeric literals can be integers, floats, or complex numbers.

• String literals are enclosed in quotes, either single or double.

• Boolean literals are either True or False.

• Examples: 42 is an integer literal, 'hello' is a string literal, True is a boolean literal.

Reverse of string

• Use a loop to iterate through the string and append each character to a new string in reverse order

• Alternatively, use the built-in reverse() method for strings in some programming languages