2. Question description: How would you interpret a negative correlation coefficient?
Possible answer: “A negative correlation coefficient indicates an inverse relationship between two variables; that is, when one variable increases, the other tends to decrease. This suggests that there is a significant statistical relationship in the opposite direction between the variables analyzed.”
3. Question description: How would you decide which modeling technique to use for a specific data set?
Possible answer: “I select the appropriate modeling technique by evaluating the nature of the data and the objectives of the analysis. For example, for structured data and predicting continuous values, I might opt for linear regression; for classification, I might consider decision trees or neural networks, depending on the complexity and interpretation required.”
4. Question description: How would you communicate technical findings to a non-technical team?
Possible answer: “To communicate technical findings to a non-technical audience, I use clear visualizations and simple explanations. For example, if I find a trend in the data, I first present the general context and then detail how the trend could impact strategic decisions.”
5. Question Description: How would you handle missing data in a dataset before performing an analysis?
Possible Answer: “Before performing an analysis, I identify and assess missing data using techniques such as value imputation or record deletion. This ensures that my analyses are based on complete and representative data.”
6. Question description: How would you evaluate the effectiveness of a predictive model?
Possible answer: “To evaluate the effectiveness vietnam telegram data of a predictive model, I use metrics such as accuracy, sensitivity, specificity, and ROC curves. In addition, I perform cross-validation and testing on independent test data to ensure that the model is robust and generalizable.”
7. Question description: What is your experience with data visualization tools?
Possible answer: “I have used tools such as Tableau and Power BI to create interactive visualizations and intuitive dashboards. These tools allow me to present data effectively and make it easier for stakeholders to understand the results.”
8. Question description: How would you manage data analytics projects under tight deadlines?
Possible answer: “To manage projects under tight deadlines, I prioritize critical tasks and use agile methodologies such as Scrum. I maintain clear communication with the team to identify potential roadblocks and adjust the plan as needed to meet objectives within the given time.”
9. Question description: How would you help improve a company’s operational efficiency using data analytics?
Possible answer: “Using data analytics, I would identify areas for improvement in operational processes by identifying bottlenecks or patterns of inefficiency. I would propose data-driven solutions to optimize processes and improve operational efficiency.”
