And this data is being called by R to compute internal consistency with the help of alpha() function. How d I tell the code that these were the specific items which were reverse coded (in a 5-point likert scale, it would mean that if the participant marked 1, it ...
The System Usability Scale (SUS) is a reliable “quick and dirty” tool for measuring usability. It comprises a ten-item questionnaire with five response options for respondents, ranging from strongly agree to strongly disagree. It allows you to evaluate various products and services, such as har...
But sometimes my clients have questions that are on a ten- or eleven-point scale but instead want to compute the percentage of folks that responded with one of the top three boxes minus the percentage of folks that responded with the bottom three boxes. I realized that the Lindsey data set...
The code below demonstrates how to compute the standard error for the R-squared of a simple linear regression model: set.seed(123) library(boot) Now we can define a function to calculate R-squared rsq_function <- function(formula, data, indices) { d <- data[indices,] #allows boot to ...
That should be clear if you imagine you have all but one data; you can compute the last one because you know that the z-scores sum to zero. So, you have N-2 degrees of freedom, but if you follow this recipe, you don’t tell that to the statistical software. It is written to ...
How to Compute Percentiles on a Histogram Updated April 25, 2017 By Luis Olortegui Frequency tables are created from the results of a poll. Frequency tables tab the results of a poll and are used to construct histograms, which are graphical representations of the choices. Relative frequency table...
(remainvs.leaveandstayvs.leave, respectively). As dependent measure, we constructed the so-called D-measure. The D-measure reflects the difference in reaction times of the experimental conditions of the within-subject design of the IAT. To compute it, we employed an algorithm developed by ...
M. (2008). An R package to compute commonality coefficients in the multiple regression case: An introduction to the package and a practical example. Behavior Research Methods, 40, 457–466. Nimon, K. F., & Oswald, F. L. (2013). Understanding the results of multiple linear regression ...
remotely linked to everyday objects, and cleverness entails the degree of insightful, humor, irony, and smartness of ideas [58]. The evaluations provided by the two judges have been averaged to compute a DT creativity score (DT-Creativity; inter-rater correlations:α= 0.91,p< 0.001)....
To determine whether the data justify the constructs to be treated as separate entities in the first place, we compute Henseler et al.’s heterotrait-monotrait ratio, given as HTMT=𝑟̲𝑖𝑗/𝑟̲𝑖𝑟̲𝑗−−−√HTMT=r¯ij/r¯ir¯j. The statistic, a lower value ...