Data Analytics
10+ Data Analytics Interview Questions and Answers
You are given an infinite supply of coins of each of denominations D = {D0, D1, D2, D3, ...... Dn-1}. You need to figure out the total number of ways W, in which you can make a change fo...read more
You are given an integer array 'ARR' of size 'N' and an integer 'S'. Your task is to return the list of all pairs of elements such that each sum of elements of each pair equals 'S'.
Note:
Each pair shou...read moreData Analytics Interview Questions and Answers for Freshers
You have been given an array/list ARR consisting of ‘N’ integers. You are also given a positive integer ‘K’.
Your task is to find the lexicographically smallest ARR that can be o...read more
You are given an array ‘ARR’ consisting of ‘N’ strings. Your task is to find the longest common prefix among all these strings. If there is no common prefix, you have to return an empty str...read more
You have been given a grid containing some oranges. Each cell of this grid has one of the three integers values:
You are given a binary search tree of integers with 'N' nodes. Your task is to return the K-th largest element of this BST.
If there is no K-th largest element in the BST, return -1.
A bi...read more
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You are given an array of pairs of strings 'EQUATIONS', and an array of real numbers 'VALUES'. Each element of the 'EQUATIONS' array denotes a fraction where the first string denotes the numera...read more
Given an array of ‘n’ integers arr. Find the Peak element of the array. The peak element of an array is defined as that element which is greater than both of its neighbours. I.e if arr[i] is th...read more
Data Analytics Jobs
Q9. what is data visualisation
Data visualisation is the graphical representation of data to help users understand trends, patterns, and insights.
Data visualisation uses charts, graphs, and maps to present data in a visually appealing way.
It helps in identifying correlations, outliers, and patterns in data.
Examples include bar charts, pie charts, scatter plots, and heat maps.
Interactive data visualisations allow users to explore data dynamically.
Q10. what is DBMS and RDBMS
DBMS stands for Database Management System, while RDBMS stands for Relational Database Management System.
DBMS is a software system that allows users to define, create, maintain and control access to the database.
RDBMS is a type of DBMS that stores data in a structured format using tables with rows and columns.
Examples of DBMS include MySQL, Oracle Database, and Microsoft SQL Server.
Examples of RDBMS include MySQL, PostgreSQL, and Oracle Database.
Q11. what is PowerBI
PowerBI is a business analytics tool by Microsoft that provides interactive visualizations and business intelligence capabilities.
Developed by Microsoft
Allows users to create interactive visualizations and reports
Offers business intelligence capabilities
Can connect to various data sources such as Excel, SQL databases, and cloud services
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