Category Archives: Data Analyst Interview Questions

Which technical tools do you use often for analysis and presentation purpose? | Data Analyst Questions

The tools to be used depend upon the nature of analysis being done. I am comfortable using the QDA (Qualitative Data Analysis) Miner, KNIME (Konstanz Information Miner), Root, PAW, etc. Also, most of my work is done using MS Excel … Continue reading

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I have provided you here some data regarding the sales figures of last 5 quarters. It shows the expenses incurred as a part of the sales activities? How would you analyze this data? | Data Analyst Questions

The answer to this question depends upon the nature of the problem that is given to you to solve. However, here are some steps that you should follow while solving the problem. Read the problem and the data carefully. Ask … Continue reading

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Besides analyzing, have you ever participated in database designing and database development tasks? | Data Analyst Questions

I have not directly participated in data designing and data development activities since we had a dedicated team to perform those functions. However, I have given valuable inputs to those teams during the discussions and helped them in research and … Continue reading

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What do you understand from the term data cleaning? | Data Analyst Questions

Data cleaning refers to the task of inspecting and cleaning data. From the given data, it is important to sort out information that is valuable for analysis. Also, one needs to eliminate information that is incorrect, unnecessary or repetitive. However, … Continue reading

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What procedure do you follow to analyze the given data? | Data Analyst Questions

The procedure I adopt to solve analytical problems depends upon the objective of the analysis. At first, I organize information by making categories. Secondly, I find relationship between two or more categories such that any changes in one category affects … Continue reading

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Describe the most difficult database problem you have faced? Why was it so difficult than other analytical problems you solved? | Data Analyst Questions

My toughest challenge was to make prediction sales during the recession period and estimate the losses the organization may suffer in the coming quarter. It was difficult since I had to interpret information and forecast future trends. Till then I … Continue reading

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According to you, which are the qualities that a data analyst must possess to be successful at this position? | Data Analyst Questions

Analytical and problem solving skills are crucial to be successful at this position. Also, one needs to be skilled at organizing and formatting data, so that information is available in an easy -to-read manner. Technical proficiency is important too, especially … Continue reading

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How do you assess the results of a logistic regression analysis? | Data Analyst Questions

You can use different methods to assess how good a logistic model is: Concordance – This tells you about the ability of the model to discriminate between the event happening and not happening. Lift – It helps you assess how … Continue reading

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How will you treat outlier values? | Data Analyst Questions

You can identify outliers using graphical analysis and univariate analysis: If there are only a few outliers, you can assess them individually. If there are many, you may want to substitute the outlier values with the 1stpercentile or the 99th … Continue reading

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How will you treat missing values? | Data Analyst Questions

The first step is to identify variables with missing values. Assess the extent of missing values. Is there a pattern in missing values? If yes, try and identify the pattern. It may lead to interesting insights. If no pattern, then … Continue reading

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