Aker Solutions Data Analyst Interview Questions and Answers

Q1. Explain your project
Ans. 
Developed a predictive model to forecast sales based on historical data
• Collected and cleaned sales data from multiple sources

• Performed exploratory data analysis to identify trends and patterns

• Built a machine learning model using regression techniques

• Evaluated model performance using metrics like RMSE and MAE
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Q2. Oops concept was asked
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Mostly easy questions

Cheating overview like should we do it as everyone is doing

If everyone is cheating you should also do it?

Q1. Everyhting about project..
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Q2. Linear vs logistic regression
Ans. 
Linear regression is used for continuous variables, while logistic regression is used for binary outcomes.
• Linear regression is used to predict a continuous outcome based on one or more input variables.

• Logistic regression is used to predict the probability of a binary outcome based on one or more input variables.

• Linear regression assumes a linear relationship between the independent and dependent variables, while logist...read more
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Q3. Normalization in dbms
Ans. 
Normalization in DBMS is the process of organizing data in a database to reduce redundancy and improve data integrity.
• Normalization involves breaking down data into smaller, more manageable tables and establishing relationships between them.

• It helps in reducing data redundancy, minimizing data anomalies, and improving data consistency.

• There are different normal forms such as 1NF, 2NF, 3NF, BCNF, and 4NF, each with spec...read more
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Q4. List array difference etc
Ans. 
Array difference is finding the elements that are present in one array but not in another.
• Use set operations like difference to find elements in one array but not in another.

• Example: arr1 = ['a', 'b', 'c'], arr2 = ['b', 'c', 'd'], arr_diff = set(arr1) - set(arr2) = ['a']
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Q1. Find tree node from leet code
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Finding a tree node from LeetCode involves traversing a tree data structure to locate a specific node.
• Use depth-first search (DFS) or breadth-first search (BFS) to traverse the tree and find the target node.

• Implement a recursive function to search for the node in the tree structure.

• Consider using a stack or queue data structure to keep track of nodes to visit next.

• Check if the current node is the target node, if not, r...read more
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Q2. Guesstimates on how to fill 4lts jar with just three jars, the popular guesstimets
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Q1. Conflict management questions
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Q2. Team work and attitude
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Q1. Agile and scrum
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Q2. QES backlog and how we handle defects
Ans. 
QES backlog is a list of defects identified in the product that need to be addressed. Handling defects involves prioritizing, assigning, fixing, and retesting them.
• QES backlog is a list of defects identified during quality assurance testing.

• Defects are prioritized based on severity and impact on the product.

• Defects are assigned to developers for fixing.

• Once fixed, defects are retested to ensure they have been resolved.

• ...read more
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Needs More logical to solve questions

Need more technical knowledge, any programming

Q1. General discussion about profile
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