prepdat: Preparing Experimental Data for Statistical Analysis

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Prepares data for statistical analysis (e.g., analysis of variance ;ANOVA) by enabling the user to easily and quickly merge (using the file_merge() function) raw data files into one merged table and then aggregate the merged table (using the prep() function) into a finalized table while keeping track and summarizing every step of the preparation. The finalized table contains several possibilities for dependent measures of the dependent variable. Most suitable when measuring variables in an interval or ratio scale (e.g., reaction-times) and/or discrete values such as accuracy. Main functions included are file_merge() and prep(). The file_merge() function vertically merges individual data files (in a long format) in which each line is a single observation to one single dataset. The prep() function aggregates the single dataset according to any combination of grouping variables (i.e., between-subjects and within-subjects independent variables, respectively), and returns a data frame with a number of dependent measures for further analysis for each cell according to the combination of provided grouping variables. Dependent measures for each cell include among others means before and after rejecting all values according to a flexible standard deviation criteria, number of rejected values according to the flexible standard deviation criteria, proportions of rejected values according to the flexible standard deviation criteria, number of values before rejection, means after rejecting values according to procedures described in Van Selst & Jolicoeur (1994; suitable when measuring reaction-times), standard deviations, medians, means according to any percentile (e.g., 0.05, 0.25, 0.75, 0.95) and harmonic means. The data frame prep() returns can also be exported as a txt file to be used for statistical analysis in other statistical programs.

Author
Ayala S. Allon [aut, cre], Roy Luria [aut], James Grange [ctb], Nachshon Meiran [ctb]
Date of publication
2016-09-23 11:22:48
Maintainer
Ayala S. Allon <ayalaallon@gmail.com>
License
GPL-3
Version
1.0.8
URLs

View on CRAN

Man pages

file_merge
Vertically Merge Files in a Directory into a Single Large...
finalized_stroopdata
Finalized Table 'prepdat::prep()' returns for 'stroopdata'...
hybrid_recursive_mc
Hybrid-recursive Outlier Removal Procedure with Moving...
modified_recursive_mc
Modified-recursive Outlier Removal Procedure with Moving...
non_recursive_mc
Non-recursive Outlier Removal Procedure with Moving Criterion
prep
Creates One Finalized Table Ready for Statistical Analysis
read_data
Reads a File in a txt or csv Format that Contains a Table and...
stroopdata
Reaction-times and accuracy for color naming in a Stroop task...

Files in this package

prepdat
prepdat/tests
prepdat/tests/testthat.R
prepdat/tests/testthat
prepdat/tests/testthat/test_prep.R
prepdat/NAMESPACE
prepdat/NEWS.md
prepdat/data
prepdat/data/finalized_stroopdata.rda
prepdat/data/stroopdata.rda
prepdat/R
prepdat/R/prep.R
prepdat/R/sysdata.rda
prepdat/R/modified_recursive_mc.R
prepdat/R/read_data.R
prepdat/R/non_recursive_mc.R
prepdat/R/stroopdata.R
prepdat/R/finalized_stroopdata.R
prepdat/R/file_merge.R
prepdat/R/hybrid_recursive_mc.R
prepdat/README.md
prepdat/MD5
prepdat/DESCRIPTION
prepdat/man
prepdat/man/modified_recursive_mc.Rd
prepdat/man/read_data.Rd
prepdat/man/finalized_stroopdata.Rd
prepdat/man/file_merge.Rd
prepdat/man/hybrid_recursive_mc.Rd
prepdat/man/stroopdata.Rd
prepdat/man/prep.Rd
prepdat/man/non_recursive_mc.Rd