Sample interview questions: What methodologies and tools do you use for data analysis?
Sample answer:
1. Data Collection:
– Web Analytics Tools: Google Analytics, Adobe Analytics, Mixpanel
– Server Log Analysis: Logstash, Splunk, ELK Stack
– Customer Relationship Management (CRM) Systems: Salesforce, HubSpot
– Survey and Feedback Platforms: Qualtrics, SurveyMonkey
– Social Media Analytics: Brandwatch, Sprout Social, Hootsuite
2. Data Preparation and Cleaning:
– Data Extraction Tools: Python (Pandas, NumPy), R, SQL
– Data Cleaning Tools: OpenRefine, Trifacta, Informatica Data Quality
– Data Manipulation and Transformation: Python (Pandas, NumPy), R, SQL
3. Exploratory Data Analysis (EDA):
– Data Visualization Tools: Tableau, Power BI, Google Data Studio
– Statistical Analysis Tools: Python (SciPy, Statsmodels), R, SAS
– Machine Learning Libraries: Python (Scikit-learn, TensorFlow, PyTorch), R (Caret, mlr)
4. Statistical and Predictive Modeling:
– Regression Analysis: Linear regression, Logistic regression, Time series analysis
– Clustering Analysis: K-means clustering, Hierarchical clustering, DBSCAN
– Classification Analysis: Decision trees, Random forests, Support vector machines
– Dimensionality Reduction: Principal Component Analysis (PCA), Singular Value Decomposition (SVD)
5. Data Visualization and Re… Read full answer
Source: https://hireabo.com/job/8_3_22/Advertising%20Data%20Analyst