MSPRT: A Modified Sequential Probability Ratio Test (MSPRT)

Given the maximum available sample size (N) for an experiment, and the target levels of Type I and II error probabilities, this package designs a modified SPRT (MSPRT). For any designed MSPRT the package can also obtain its operating characteristics and implement the test for a given sequentially observed data. The MSPRT is defined in a manner very similar to Wald's initial proposal. The proposed test has shown evidence of reducing the average sample size required to perform statistical hypothesis tests at specified levels of significance and power. Currently, the package implements one-sample proportion tests, one and two-sample z tests, and one and two-sample t tests. A brief user guidance for this package is provided below. One can also refer to the supplemental information for the same.

Version: 3.0
Imports: nleqslv, ggplot2, ggpubr, foreach, iterators, parallel, doParallel, datasets, graphics, grDevices, methods, stats, utils
Published: 2020-11-13
DOI: 10.32614/CRAN.package.MSPRT
Author: Sandipan Pramanik [aut, cre], Valen E. Johnson [aut], Anirban Bhattacharya [aut]
Maintainer: Sandipan Pramanik <sandy.pramanik at>
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
NeedsCompilation: no
CRAN checks: MSPRT results


Reference manual: MSPRT.pdf


Package source: MSPRT_3.0.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
macOS binaries: r-release (arm64): MSPRT_3.0.tgz, r-oldrel (arm64): MSPRT_3.0.tgz, r-release (x86_64): MSPRT_3.0.tgz, r-oldrel (x86_64): MSPRT_3.0.tgz
Old sources: MSPRT archive


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