 the Kaplan-Meier estimator:</p>
<p>$$\phi_n\left( \frac{r}{n}\right) = \sum_{j=1}^{r} \left[ \prod_{i=1}^{j}
\left( 1 - \frac{d_i}{n_i}\right) \right] \left(T_{(j)} - T_{(j-1)} \right)$$</p>
    <h2 class="hasAnchor" id="references"><a class="anchor" href="#references"></a>References</h2>

    <p>Barlow RE (1979).
&#8220;Geometry of the total time on test transform.&#8221;
<em>Naval Research Logistics Quarterly</em>, <b>26</b>(3), 393--402.
ISSN 00281441, doi: <a href='https://doi.org/10.1002/nav.380026030