The function estimates the population proportion by group testing using Gart's method. It is for both equal and unequal group size.

1 | ```
p.gart(obs)
``` |

`obs` |
A three-column matrix containing all the data information. Column 1 is the number of groups. Column 2 is group size. Column 3 is number of positives. Different rows corresponds to different group sizes. |

Gart's estimate for population proportion by group testing

Qingyang Zhang, Yanchuan Li

Gary, J. (1991) An application of score methodology: confidence intervals and tests of fit for one-hit curves. Handbook of Statistics, 8(395-406), Amsterdam Elsevier. <https://www.elsevier.com/books/book-series/handbook-of-statistics>

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