i-exceed technology solutions Intern Interview Questions and Answers

You will be given a dataset and a questionnaire to be solved over it

Q1. Explain confidance interval
Ans. 
Confidence interval is a range of values that is likely to contain the true population parameter with a certain level of confidence.
• Confidence interval is used to estimate the population parameter based on a sample statistic.

• It is calculated by taking the sample mean and adding or subtracting the margin of error.

• The level of confidence is typically set at 95% or 99%.

• For example, a 95% confidence interval for the averag...read more
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Q2. Explain logistic regression
Ans. 
Logistic regression is a statistical method used to analyze and model the relationship between a binary dependent variable and one or more independent variables.
• It is used to predict the probability of a binary outcome (0 or 1).

• It uses a sigmoid function to map the input values to the output probability.

• It is commonly used in machine learning for classification problems.

• Example: predicting whether a customer will buy a...read more
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Q3. Use of confusion matrix
Ans. 
Confusion matrix is a table used to evaluate the performance of a classification model.
• It helps in calculating various metrics like accuracy, precision, recall, F1 score, etc.

• It compares the predicted values with the actual values to identify true positives, true negatives, false positives, and false negatives.

• It is commonly used in machine learning and data science to evaluate the performance of classification models.

• ...read more
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Q4. Explain academic projects
Ans. 
Academic projects are assignments given to students to apply their theoretical knowledge in practical scenarios.
• Academic projects are designed to help students gain hands-on experience in their field of study.

• They require students to apply their theoretical knowledge to solve real-world problems.

• Examples of academic projects include building a website, designing a software application, conducting a research study, or c...read more
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Q1. What do you know about crif
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Q2. What do you want to learn here
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Q1. Sorting algorithm
Ans. 
Sorting algorithms are used to arrange elements in a specific order.
• Sorting algorithms can be categorized as comparison-based or non-comparison-based.

• Examples of sorting algorithms include Bubble Sort, Merge Sort, and Quick Sort.

• Efficiency of sorting algorithms is measured in terms of time complexity and space complexity.
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Q2. Secod highest salary
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5 MCQ questions, and 1 coding question similar to Leetcode medium-hard level (topic-greedy).

Q1. Basic DSA questions related to strings, linkedlists, binary search etc.
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Q2. Questions related to resume
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You will be given a dataset and a questionnaire to be solved over it

Q1. Explain confidance interval
Ans. 
Confidence interval is a range of values that is likely to contain the true population parameter with a certain level of confidence.
• Confidence interval is used to estimate the population parameter based on a sample statistic.

• It is calculated by taking the sample mean and adding or subtracting the margin of error.

• The level of confidence is typically set at 95% or 99%.

• For example, a 95% confidence interval for the averag...read more
Answered by AI
Add your answer
Q2. Explain logistic regression
Ans. 
Logistic regression is a statistical method used to analyze and model the relationship between a binary dependent variable and one or more independent variables.
• It is used to predict the probability of a binary outcome (0 or 1).

• It uses a sigmoid function to map the input values to the output probability.

• It is commonly used in machine learning for classification problems.

• Example: predicting whether a customer will buy a...read more
Answered by AI
Add your answer
Q3. Use of confusion matrix
Ans. 
Confusion matrix is a table used to evaluate the performance of a classification model.
• It helps in calculating various metrics like accuracy, precision, recall, F1 score, etc.

• It compares the predicted values with the actual values to identify true positives, true negatives, false positives, and false negatives.

• It is commonly used in machine learning and data science to evaluate the performance of classification models.

• ...read more
Answered by AI
Add your answer
Q4. Explain academic projects
Ans. 
Academic projects are assignments given to students to apply their theoretical knowledge in practical scenarios.
• Academic projects are designed to help students gain hands-on experience in their field of study.

• They require students to apply their theoretical knowledge to solve real-world problems.

• Examples of academic projects include building a website, designing a software application, conducting a research study, or c...read more
Answered by AI
Add your answer

Q1. What do you know about crif
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Q2. What do you want to learn here
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Hacker Rank 2 easy questions like first unique occurance in string

Q1. Java OOPS famous data structure time complexity 1 coding question easy.
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Q1. Basic HR Question Explain the projects that you have done.
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Q1. Tell me about yourself
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Q2. Projects questions
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Case details on economics and data. how would you use data to do XYZ?

Round duration - 75 minutes
Round difficulty - Easy

Simple question based on strings was given. MCQs based on basic aptitude and programming questions were asked. 
Tips: Time management is important. Remember all the syntaxes

Q1. 
Reverse the String Problem Statement
You are given a string STR which contains alphabets, numbers, and special characters. Your task is to reverse the string.
Example:
Input:
STR = "abcde"
Output:
"e...read more
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Round duration - 60 minutes
Round difficulty - Easy

It was a good experience.
Tips: If you don't know something just tell them. Don't try to answer something if you don't know anything about it

Q1. 
One Away Transformation Problem
Given two strings, A and B, determine whether A can be transformed into B by performing at most one of the following operations (including zero operations):
1. Delete a ch...read more
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Q2. 
Remove Duplicates from String Problem Statement
You are provided a string STR of length N, consisting solely of lowercase English letters.
Your task is to remove all duplicate occurrences of characters i...read more
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Round duration - 30 minutes
Round difficulty - Easy

It was easy. I could answer the first question. Second one I answered really badly

Round duration - 60 minutes
Round difficulty - Easy

Technical round that lasted for around 60 minutes. The interviewer asked me questions based on DSA and OOPS concepts.

Q1. 
Dijkstra's Shortest Path Problem
Given an undirected graph with ‘V’ vertices (labeled 0, 1, ... , V-1) and ‘E’ edges, where each edge has a weight representing the distance between two connected nodes (X,...read more
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Q2. What is the difference between C and C++?
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Q3. What is the difference between malloc and new?
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Q4. What is a virtual function?
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Round duration - 60 minutes
Round difficulty - Easy

Technical round that lasted for around 60 minutes. The interviewer asked me questions based on SQL and OOPS concepts.

Q1. Write a query to find the nth highest salary from a database.
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Q2. What is the difference between Stack and Heap in the context of Object-Oriented Programming (OOPS)?
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Round duration - 30 minutes
Round difficulty - Easy

HR round that lasted for around 30 minutes. The interviewer asked questions to know more about me. We also discussed a puzzle.

Q1. You have two hourglasses, one measuring 7 minutes and the other measuring 11 minutes. How can you measure exactly 15 minutes using only these hourglasses?
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