the errors have expectation zero and are uncorrelated and have equal variances

the errors have expectation zero and are uncorrelated and have equal variances

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送交者: wasqaz 于 2009-05-30, 17:01:37:

回答: 这算我没想到，不过不影响论点由 wasqaz 于 2009-05-30, 16:57:41:

，是不是等价于高斯分布？
这破WIKI错了，还是我老了。
我看到这里就认为是等价的。
为什么不是等价的？

这个条件连非对称r.v..都能满足,怎么会和高斯分布等价? (无内容) - LaoXiao (0 bytes) 2009-05-30, 18:07:06 (331352)
- 是么？<Xi>=0, <Xi Xj>=0 - wasqaz (90 bytes) 2009-05-30, 18:25:56 (331353)
  - Let {Xi} be any i.i.d. r.v. with finite 2nd moment, then ...... - LaoXiao (92 bytes) 2009-05-30, 20:50:43 (331369)
  - 有何不可？ - wasguru (100 bytes) 2009-05-30, 18:34:34 (331354)
    - 方差相等也是两个随机变量之间的关系 - wasguru (114 bytes) 2009-05-30, 18:53:11 (331359)
    - and have equal variances - wasqaz (25 bytes) 2009-05-30, 18:49:01 (331356)
等价? 差远了去. (无内容) - LaoXiao (0 bytes) 2009-05-30, 17:58:08 (331351)
当然不等价 (无内容) - wasguru (0 bytes) 2009-05-30, 17:04:08 (331341)