31. In data science, what is the term for the process of finding and handling missing data in a dataset?
32. What does the term "ensemble learning" refer to in machine learning?
33. In statistical hypothesis testing, what is the significance level typically denoted by the symbol ? (alpha)?
34. What is the primary goal of feature engineering in machine learning?
35. In the context of natural language processing (NLP), what does "TF-IDF" stand for?
36. What does the term "bias" refer to in machine learning and statistics?
37. In data science, what is the term for the process of reducing the volume of data while retaining meaningful information?
38. Which statistical test is used to determine if there is a significant difference between the means of more than two groups?
39. What is the primary purpose of the "Pearson correlation coefficient" in statistics?
40. In machine learning, what is the term for a type of model that can make predictions for both classification and regression tasks?
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