%0 Journal Article %@ 0167-7152 %A Crimaldi, Irene %A Pratelli, Luca %D 2005 %F eprints:987 %I Elsevier %J Statistics and probability letters %K Conditional expectation; Convergence in distribution; Convergence in total variation %N 2 %P 151-162 %T Two inequalities for conditional expectations and convergence results for filters %U http://eprints.imtlucca.it/987/ %V 74 %X In this paper we prove, first of all, two inequalities for conditional expectations, from which we easily deduce a result by Landers and Rogge. Then we prove convergence results for conditional expectations of the form Pn [f(Xn)|Yn] to a conditional expectation of the form P [f(X)|Y]. We study, in particular, the case in which the random variables Yn Y are of the type hn (Xn), h(X)