NO.PZ202208220100000405
问题如下:
Determine using Exhibit 2 which one of the following statements is most likely to be correct. Monthly seasonality in the firm’s portfolio is________.
选项:
A.highly likely
B.highly unlikely
C.not able to be determined from the given data
解释:
B is correct. Monthly seasonality in the firm’s portfolio is highly unlikely. Thevariance explained by the model (R-squared) is only 10.3%, and after adjusting forthe number of independent variables (adjusted R-squared), it becomes negative.Also, the insignificant F-statistic indicates a 56.3% chance that all variable coefficients are zero. Finally, t-statistics and associated p-values indicate that all thevariable coefficients are insignificant (i.e., not significantly different from zero).Consequently, monthly seasonality is highly unlikely to exist in this portfolio.
F value =0.879, significant F 等于0.563,F 值落在临界值右边,不是应该要拒绝原假设吗