DecisionTree Analytics Data Analyst Interview Questions, Process, and Tips

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Q1. Tell me about yourself
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Q2. Tell me about you inters hip
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Q3. Fixed assets with example
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Fixed assets are long-term tangible assets that are used in the production of goods or services and are not intended for sale.
• Fixed assets are physical assets such as buildings, machinery, equipment, vehicles, and land.

• They are not intended for sale and are used for the production of goods or services over a long period of time.

• Examples of fixed assets include manufacturing plants, office buildings, delivery trucks, an
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Q4. Capital assets with example
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Capital assets are long-term assets that are used in the production of goods or services and are not easily converted into cash.
• Capital assets are typically tangible assets such as buildings, machinery, equipment, and vehicles.

• They are used by a company to generate revenue over an extended period of time.

• Examples of capital assets include manufacturing plants, delivery trucks, office furniture, and computer systems.
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Q5. Why we use current ration
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Current ratio is used to assess a company's ability to pay its short-term obligations with its short-term assets.
• Current ratio is a liquidity ratio that measures a company's ability to cover its short-term liabilities with its short-term assets.

• It is calculated by dividing current assets by current liabilities.

• A current ratio of 1 or higher is generally considered healthy, as it indicates that a company has enough curr...read more
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Q1. Python string is changable or not
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Python strings are immutable, meaning they cannot be changed once created.
• Python strings are immutable, so any operation that appears to modify a string actually creates a new string object.

• For example, when you use string concatenation or slicing, a new string is created instead of modifying the original string.

• To modify a string in Python, you would need to create a new string with the desired changes.
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Q2. Sql window function ?
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Q3. Difference between having and where cause
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HAVING is used with GROUP BY to filter groups, WHERE is used to filter rows
• HAVING is used with GROUP BY clause to filter the groups based on aggregate functions

• WHERE is used to filter rows based on conditions

• HAVING is applied after the GROUP BY clause, WHERE is applied before

• HAVING can only be used with SELECT statement that contains a GROUP BY clause

• Example: SELECT department, AVG(salary) FROM employees GROUP BY depar...read more
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Q4. Sql union and union all
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Q5. Python using remove duplicate value
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Use Python's set() function to remove duplicate values from an array of strings.
• Convert the array to a set to automatically remove duplicates

• Convert the set back to a list if needed
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