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\begin{frame}{Investigation Accuracy of Estimators  by the Method of Statistical simulation}
To investigate the accuracy properties of the estimators by the method of statistical simulations, we considered original and corrected of the estimators.

% these are the two tilde

\[  var(\tilde\tilde{p}_n)=E{(\tilde\tilde{p}_n-p)^2}\]
Asymptotic variance $p$
\[ \lambda_{11}=\frac{(1-p) ( 2 (1-p) m+3p-2)} {m}.\]

marked as duplicate by user36296 beamer May 25 '18 at 14:52

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    Welcome to TeX.SE! Are you looking for \sim? – marmot May 25 '18 at 14:40

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