Laiqa Interview Questions and Answers

No, regression is used for predicting continuous values, while classification is used for predicting categorical values.

• Regression predicts continuous values, while classification predicts categorical values

• Regression models include linear regression, polynomial regression, etc.

• Classification models include logistic regression, decision trees, etc.

I have worked with tools such as Excel, SQL, Python, Tableau, and Power BI.

• Excel

• SQL

• Python

• Tableau

• Power BI

Inner join returns only the matching rows between two tables, while outer join returns all rows from both tables.

• Inner join combines rows from two tables based on a related column

• Outer join combines rows from two tables even if there is no match based on a related column

• Examples: Inner join - SELECT * FROM table1 INNER JOIN table2 ON table1.id = table2.id

• Outer join - SELECT * FROM table1 LEFT OUTER JOIN table2 ON table1.id = table2.id

Bivariate analysis is the analysis of two variables to determine if there is a relationship between them.

• It involves examining the relationship between two variables to determine if changes in one variable are associated with changes in the other variable.

• Common techniques used in bivariate analysis include correlation analysis, scatter plots, and regression analysis.

• Bivariate analysis helps in understanding the strength and direction of the relationship between two variables...read more

Model evaluation metrics are used to assess the performance of a predictive model by comparing predicted values with actual values.

• Common model evaluation metrics include accuracy, precision, recall, F1 score, ROC-AUC, and mean squared error.

• Accuracy measures the proportion of correct predictions out of the total predictions made by the model.

• Precision measures the proportion of true positive predictions out of all positive predictions made by the model.

• Recall measures the pr...read more

A decorator in Python is a design pattern that allows you to add new functionality to an existing object without modifying its structure.

• Decorators are functions that take another function as an argument and extend its behavior without modifying it directly.

• They are commonly used in web frameworks like Django to add functionality to views or methods.

• Example: @login_required decorator in Django ensures that only authenticated users can access a particular view.

Tuple is immutable, ordered collection of elements while list is mutable, ordered collection of elements.

• Tuple is defined using parentheses () while list is defined using square brackets []

• Tuple elements cannot be changed once defined while list elements can be modified

• Tuple is faster than list for iteration and accessing elements

• Example: tuple_example = (1, 2, 3) and list_example = [1, 2, 3]