최신 CompTIA Data+ DY0-001 무료샘플문제:
1. A data scientist observes findings that indicate that as electrical grids in a country become more and more connected over time, the frequency of brownouts and blackouts in total decrease, and the frequency of major brownouts and blackouts increase. Which of the following distribution metrics could best be identified?
A) Normality
B) Skewness
C) Kurtosis
D) Scale axis magnitudes
2. A data scientist is building a forecasting model for the price of copper. The only input in this model is the daily price of copper for the last ten years. Which of the following forecasting techniques is the most appropriate for the data scientist to use?
A) Moving average
B) Relative strength
C) Dynamic time warping
D) Autoregressive
3. Which of the following describes the appropriate use case for PCA?
A) Classification
B) Regression
C) Dimensionality reduction
D) Recommendation
4. A data scientist is merging two tables. Table 1 contains employee IDs and roles. Table 2 contains employee IDs and team assignments. Which of the following is the best technique to combine these data sets?
A) inner join between Table 1 and Table 2
B) right join on Table 1 with Table 2
C) left join on Table 1 with Table 2
D) outer join between Table 1 and Table 2
5. A data analyst is examining the correlation matrix of a new data set to identify issues that could adversely impact model performance. Which of the following is the analyst most likely checking for?
A) Overfitting
B) Undersampling
C) Oversampling
D) Multicollinearity
질문과 대답:
| 질문 # 1 정답: C | 질문 # 2 정답: D | 질문 # 3 정답: C | 질문 # 4 정답: A | 질문 # 5 정답: D |
2 개 고객 리뷰
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