51. Which time series forecasting method is suitable for data with both trend and seasonality components? A. Moving Average B. Exponential Smoothing C. ARIMA D. Seasonal Decomposition of Time Series Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
52. In time series analysis, what is the primary goal of "white noise testing"? A. To identify seasonality in the data B. To test for independence in the residuals C. To remove outliers from the data D. To evaluate the accuracy of forecasts Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
53. What is the primary purpose of "cross-validation" in the context of time series forecasting? A. To identify seasonality in the data B. To test for causality between time series data C. To remove outliers from the data D. To assess the model's predictive performance Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
54. Which method in time series analysis involves comparing actual values with predicted values to assess forecast accuracy? A. Residual Analysis B. White Noise Testing C. Cross-Validation D. Autoregressive Integrated Moving Average (ARIMA) Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
55. In time series analysis, what does the term "overfitting" refer to? A. An overly complex model that fits noise B. A model that cannot capture seasonality C. A model that lacks trend information D. A model with too few parameters Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
56. Which method in time series analysis is used to estimate the future values of a time series using past values and their associated weights? A. Exponential Smoothing B. Moving Average C. ARIMA D. Seasonal Decomposition of Time Series Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
57. In time series analysis, what is the primary goal of "forecast error decomposition"? A. To identify seasonality in the data B. To test for autocorrelation in the residuals C. To evaluate the accuracy of forecasts D. To break down forecast errors into components Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
58. What is the primary purpose of "Box-Cox transformation" in time series analysis? A. To identify seasonality in the data B. To remove outliers from the data C. To transform non-normal data D. To add noise to the data Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
59. In time series analysis, what is the primary objective of "cointegration testing" between time series data sets? A. To identify seasonality in the data B. To test for long-term relationships C. To remove outliers from the data D. To determine the order of differencing Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
60. Which statistical test is commonly used to assess the presence of seasonality in time series data? A. Augmented Dickey-Fuller test B. Seasonal Decomposition of Time Series C. Ljung-Box test D. ACF (Autocorrelation Function) Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
