Talk:Ratio estimator

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This article is very poorly written, and no assumptions are stated to justify the following claims:

  • "θy is known to be asymptotically normally distributed." - asymptotics requires a parameter going to infinity, which is never stated. Is the resulting normality a result of the Central Limit Theorem? If so, an independence assumption must be made, as well as a finite-variance assumption.
  • "E(x*1/y) = E(x)*E(1/y)" - this requires independence of x & y, which is never stated.

--65.209.72.194 (talk) 15:02, 25 July 2014 (UTC)