问题如下:
7. Which of Silveira’s statements concerning momentum indicators is correct?
选项:
Statement 6 only
C.Both Statement 5 and Statement 6
解释:
A is correct. Relative-strength indicators compare an equity’s performance with the performance of a group of equities or with its own past performance. SUE is unexpected earnings scaled by the standard deviation in past unexpected earnings (not the standard deviation of analysts’ earnings forecasts, which is used in the calculation of the scaled earnings surprise)
请教一下,怎么理解Statement 6错误, unexpected earnings也是earnings一部分,为什么不能用earnings 的standard deviation来衡量呢